Document and Entity Information Document Type Document Quarterly Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Entity Listing, Par Value Per Share Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Central Index Key Amendment Flag Condensed Consolidated Balance Sheets Statement [Table] Statement [Line Items] Assets [Abstract] Investments [Abstract] Investments: Debt Securities, Available-for-sale Fixed maturity securities available for sale, at fair value (amortized cost: $530,992 in 2022; $426,122 in 2021) Fair Value Fair Value Equity Securities, FV-NI Equity securities, at fair value (cost: $42,111 in 2022; $31,834 in 2021) Equity securities at fair value Investments. Total investments Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Restricted Cash Restricted cash Accrued Investment Income Receivable Accrued investment income Premiums Receivable, Net Premiums receivable, net Deferred Policy Acquisition Costs Deferred policy acquisition costs, net of ceding commissions Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Reinsurance recoverable on unpaid losses and loss adjustment expenses Add: Reinsurance recoverables on unpaid losses and LAE at end of period Reinsurance Recoverable for Paid Claims and Claims Adjustments Reinsurance recoverable on paid losses and loss adjustment expenses Prepaid Reinsurance Premiums Ceded unearned premiums Prepaid Expense and Other Assets Prepaid expenses and other assets Deferred Income Tax Assets, Net Deferred tax assets, net Property, Plant and Equipment, Net Property and equipment, net Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Assets Total assets Liabilities and Equity [Abstract] Liabilities [Abstract] Liabilities: Accounts Payable and Other Accrued Liabilities Accounts payable and other accrued liabilities Liability for Claims and Claims Adjustment Expense Reserve for losses and loss adjustment expenses Reserve for losses and LAE gross of reinsurance recoverables on unpaid losses and LAE at end of period Unearned Premiums Unearned premiums Ceded Premiums Payable Ceded premium payable Funds Held under Reinsurance Agreements, Liability Funds held under reinsurance treaty Deferred Income Tax Liabilities, Net Deferred tax liabilities, net Notes Payable Borrowings from credit agreements Liabilities Total liabilities Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Preferred stock, $0.0001 par value, 5,000,000 shares authorized, 0 shares issued and outstanding as of September 30, 2022 and December 31, 2021 Common Stock, Value, Issued Common stock, $0.0001 par value, 500,000,000 shares authorized, 25,229,486 and 25,428,929 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Retained Earnings (Accumulated Deficit) Retained earnings Stockholders' Equity Attributable to Parent Ending balance Beginning balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss [Abstract] Fixed maturity securities available for sale, amortized cost Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss Fixed maturity securities available for sale, amortized cost Amortized Cost Debt Securities, Trading, and Equity Securities, FV-NI, Cost [Abstract] Equity securities, cost Equity Securities, FV-NI, Cost Equity securities, cost Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Preferred stock Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized (in shares) Preferred Stock, Shares Issued Preferred stock, shares issued (in shares) Preferred Stock, Shares Outstanding Preferred stock, shares outstanding (in shares) Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common stock Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized (in shares) Common Stock, Shares, Issued Ending balance (in shares) Beginning balance (in shares) Common stock, shares issued (in shares) Common Stock, Shares, Outstanding Common stock, shares outstanding (in shares) Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) Revenues [Abstract] Revenues: Premiums Written, Gross Gross written premiums Amount Ceded Premiums Written Ceded written premiums Premiums Written, Net Net written premiums (Increase) Decrease in Unearned Premiums, Net Change in unearned premiums Premiums Earned, Net Net earned premiums Net Investment Income Net investment income Gain (Loss) on Investments Net realized and unrealized losses on investments The amount of commission and other revenue earned during period. Commission And Other Income Commission and other income Revenues Total revenues Benefits, Losses and Expenses [Abstract] Expenses: Policyholder Benefits and Claims Incurred, Net Losses and loss adjustment expenses Deferred Policy Acquisition Costs, Amortization Expense Acquisition expenses Other Underwriting Expense Other underwriting expenses Interest Expense Interest expense Benefits, Losses and Expenses Total expenses Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income before income taxes Income Tax Expense (Benefit) Income tax expense (benefit) Net Income (Loss) Attributable to Parent Net income Net income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other comprehensive income (loss), net: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Net unrealized losses on securities available for sale for the three and nine months ended September 30, 2022 and 2021, respectively Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net comprehensive income (loss) Earnings Per Share, Diluted [Abstract] Earnings per share: Per Share Data: Earnings Per Share, Basic Basic (in dollars per share) Basic earnings per share Earnings Per Share, Diluted Diluted (in dollars per share) Diluted earnings per share Earnings Per Share, Basic, Other Disclosures [Abstract] Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Diluted (in shares) Condensed Consolidated Statements of Changes in Stockholders' Equity Equity Components [Axis] Equity Component [Domain] Parent [Member] Common Stock Additional Paid-In Capital Accumulated Other Comprehensive Income (Loss) Retained Earnings Increase (Decrease) in Stockholders' Equity [Roll Forward] Changes in Stockholders' Equity Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income (loss) Other comprehensive loss, net of tax Adjustments to Additional Paid in Capital, Share-based Compensation, Other Long-term Incentive Plans, Requisite Service Period Recognition Stock-based compensation Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of common stock via employee stock purchase plan Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of common stock via employee stock purchase plan (in shares) Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture Issuance of common stock via equity incentive plan Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture Issuance of common stock via equity incentive plan (in shares) Stock Repurchased and Retired During Period, Value Repurchases of common stock Stock Repurchased and Retired During Period, Shares Repurchases of common stock (in shares) Condensed Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] Operating activities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments for Software Capitalized software costs Payments to Acquire Debt Securities, Available-for-sale Purchases of fixed maturity securities Payments to Acquire Marketable Securities Purchases of equity securities Proceeds from Sale and Maturity of Debt Securities, Available-for-sale Sales and maturities of fixed maturity securities Proceeds from Sale and Maturity of Marketable Securities Sales of equity securities The net cash outflow or inflow from securities during the period, which are classified as investing activities. Payments For Proceeds From Securities Investing Activities Change in securities receivable or payable, net Payment of Additional Cost For Purchase of Policy Renewal Rights Payment of Additional Cost For Purchase of Policy Renewal Rights Payment of additional costs associated with purchase of policy renewal rights Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities Proceeds from Lines of Credit Proceeds from line of credit Proceeds, Issuance of Shares, Share-based Payment Arrangement, Excluding Option Exercised Proceeds from common stock issued via employee stock purchase plan Proceeds from Stock Options Exercised Proceeds from common stock issued via stock option exercises Payments for Repurchase of Common Stock Repurchases of common stock Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net decrease in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Cash, cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash Supplemental Cash Flow Information [Abstract] Supplementary cash flow information: Income Taxes Paid, Net Cash paid for income taxes Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] Cash and cash equivalents and restricted cash and cash equivalents Summary of Operations and Basis of Presentation Basis of Presentation and Significant Accounting Policies [Text Block] Summary of Operations and Basis of Presentation Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Investments Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Reserve for Losses and Loss Adjustment Expenses The entire disclosure of reserve for losses and loss adjustment expenses. Reserve for Losses And Loss Adjustment Expenses [Text Block] Reserve for Losses and Loss Adjustment Expenses Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Accumulated Other Comprehensive Income Underwriting Information Segment Reporting Disclosure [Text Block] Underwriting Information Income Taxes Income Tax Disclosure [Text Block] Income Taxes Earnings Per Share Earnings Per Share [Text Block] Earnings Per Share Reinsurance Reinsurance [Text Block] Reinsurance Credit Agreements Debt Disclosure [Text Block] Credit Agreements Disclosure of accounting policy for the summary of operations. Summary Of Operations [Policy Text Block] Summary of Operations Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Use of Estimates, Policy [Policy Text Block] Use of Estimates New Accounting Pronouncements, Policy [Policy Text Block] Recently adopted accounting pronouncements and recently issued accounting pronouncements not yet adopted Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of available-for-sale investments Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] Schedule of aggregate fair value and gross unrealized losses Investments Classified by Contractual Maturity Date [Table Text Block] Schedule of contractual maturities of available-for-sale securities Investment Income [Table Text Block] Schedule of net investment income Gain (Loss) on Securities [Table Text Block] Schedule of net realized and unrealized investment gains and losses Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of hierarchy for financial assets and liabilities measured at fair value Short-duration Insurance Contracts, Claims Development [Table] Claims Development [Line Items] Claims Development Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Schedule of reconciliation of changes in the ending reserve balances for losses and loss adjustment expenses ("LAE") The tabular disclosure of common stock reserved for future issuance. Schedule of Capital Reserved for Future Issuance [Table Text Block] Schedule of common stock reserved for future issuance Share-based Payment Arrangement, Cost by Plan [Table Text Block] Schedule of stock-based compensation expense Share-based Payment Arrangement, Activity [Table Text Block] Schedule of stock option transactions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of fair value of each option granted was estimated on the grant date using the Black-Scholes option pricing model Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Schedule of RSU transactions Schedule of Nonvested Performance-based Units Activity [Table Text Block] Schedule of Performance stock unit transactions Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of changes in accumulated other comprehensive income (AOCI) Disaggregation of Revenue [Table Text Block] Schedule of gross written premiums Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of earnings per share of common stock Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instruments [Domain] U.S. Governments Represents the information pertaining to states territories possessions debt securities. States, territories, and possessions Represents the information pertaining to political subdivisions debt securities. Political subdivisions Represents the information pertaining to special revenue excluding asset backed securities. Special revenue excluding mortgage/asset-backed securities Corporate Debt Securities and Other Debt Obligations [Member] Corporate and other Mortgage/asset-backed securities Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] Available for sale investments Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract] Number of positions: Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions Number of unrealized loss positions Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position Fair Value - Total Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Unrealized Losses Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Unrealized Losses - Total Unrealized Losses Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Fair Value - Less Than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Fair Value - More Than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Unrealized Losses - Less Than 12 Months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Unrealized Losses - More Than 12 Months Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after five years through ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Due after ten years Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Mortgage and asset-backed securities Fair Value Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Mortgage and asset-backed securities Investment Income, Net [Abstract] Net investment income Investment Income, Interest Interest income Investment Income, Dividend Dividend income Investment Income, Investment Expense Investment expense Investment Income, Net Net investment income Debt and Equity Securities, Gain (Loss) [Abstract] Net realized and unrealized investment gains and losses Debt Securities, Available-for-sale, Realized Gain Gains on sales of fixed maturity securities Equity Securities, FV-NI, Realized Gain Gains on sales of equity securities Amount of realized gain on investment in debt and equity securities. Debt and Equity Securities, Realized Gain Total realized gains Debt Securities, Available-for-sale, Realized Loss Losses on sales of fixed maturity securities Amount of realized loss on investment in debt and equity securities. Debt and Equity Securities, Realized Loss Total realized losses Debt and Equity Securities, Realized Gain (Loss) Net realized investment gains (losses) Equity Securities, FV-NI, Unrealized Gain (Loss) Net unrealized losses on equity securities Debt and Equity Securities, Gain (Loss) Net realized and unrealized losses on investments Proceeds from Sale and Maturity of Debt Securities, Available-for-sale [Abstract] Proceeds from sales of fixed maturity securities Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from the sale of fixed maturity securities Securities on Deposit with State Regulatory Authorities [Member] Securities on deposit with state regulatory authorities Debt Securities [Abstract] Investments Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 3 Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets, Fair Value Disclosure [Abstract] Assets: Fair value portion of cash, cash equivalents and restricted cash. Cash, Cash Equivalents and Restricted Cash, Fair Value Disclosure Cash, cash equivalents, and restricted cash Assets, Fair Value Disclosure Total assets Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Fixed income securities classified as Level 3 Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Reserve for Losses and Loss Adjustment Expenses Liability for Unpaid Claims and Claims Adjustment Expense, Net Reserve for losses and LAE net of reinsurance recoverables at end of period Reserve for losses and LAE net of reinsurance recoverables at beginning of period Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Add: Incurred losses and LAE, net of reinsurance, related to: Adverse (Favorable) Development Current Year Claims and Claims Adjustment Expense Current year Prior Year Claims and Claims Adjustment Expense Prior years Adverse (favorable) prior year development Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Total incurred Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Deduct: Loss and LAE payments, net of reinsurance, related to: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Current year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Prior years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Total payments Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Equity Award [Domain] Restricted Stock Units Performance Stock Units Plan Name [Axis] Plan Name [Domain] Represents information pertaining to 2019 Equity incentive plan. 2019 Equity Incentive Plan Represents information pertaining to 2019 Employee stock purchase plan. 2019 Employee Stock Purchase Plan Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock-Based Compensation Common stock reserved for future issuance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding at end of period (in shares) Outstanding at beginning of period (in shares) Stock options outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Non vested at end of period (in shares) Outstanding at beginning of period (in shares) Stock units outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Shares authorized (in shares) Shares authorized for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Total (in shares) Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Stock-based compensation expense Allocated Share-based Compensation Expense Stock-based compensation expense Represents the increase in the number of shares available for grant under the plan as a percentage of common stock issued and outstanding as of the immediately preceding fiscal year end date. Share Based Compensation Arrangement By Share Based Payment Award Percentage Number Of Additional Shares Available For Grant Annual automatic increase to the number of shares of common stock reserved for issuance, as a percentage of common stock issued and outstanding as at the immediately preceding fiscal year end (as a percent) Stock Options Vesting [Axis] Vesting [Domain] Share-based Payment Arrangement, Tranche One Share-based Payment Arrangement, Tranche One, First Anniversary [Member] Share-based Payment Arrangement, Tranche One, First Anniversary Share-based Payment Arrangement, Tranche Two Share-based Payment Arrangement, Tranche Two, First Anniversary [Member] Share-based Payment Arrangement, Tranche Two, First Anniversary Range [Axis] Range [Domain] Minimum Maximum Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Expiry period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Number of shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted-average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding at end of period (in dollars per share) Outstanding at beginning of period (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Additional disclosures Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Vested and Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Vested and exercisable, number (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Vested and exercisable, weighted average exercise price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Vested and exercisable, weighted average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Vested and exercisable, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Fair value assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk free rate of return, minimum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk free rate of return, maximum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected share price volatility, minimum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected share price volatility, maximum (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected life in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend yield (as a percent) Share-based Payment Arrangement, Disclosure [Abstract] Share-based Payment Arrangement, Additional Disclosure [Abstract] Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized [Abstract] Unrecognized stock-based compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Total unrecognized stock-based compensation expense, options Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Total unrecognized stock-based compensation expense, restricted stock units and performance stock units Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Weighted-average period over which unrecognized stock-based compensation expense is expected to be recognized Number of Days, Achievement of Milestone Stock Price. Number of Days, Achievement of Milestone Stock Price Number of days, achievement of milestone stock price Predetermined Performance Achievement, Percentage. Predetermined Performance Achievement, Percentage Percentage of predetermined performance achievement Share-based Compensation Arrangement by Share-based Payment Award, Award Service Period Share-based Compensation Arrangement by Share-based Payment Award, Award Service Period Award service period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Number of shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted-average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Non vested outstanding at end of period (in dollars per share) Outstanding at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Stock-Based Compensation Employee Stock Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Issuance, Authorized Annual Increase, Maximum Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Issuance, Authorized Annual Increase, Maximum Annual increase (in shares) Stock Repurchase Program, Authorized Amount Amount of authorizes repurchase Stock Repurchased During Period, Value Amount of repurchase of shares Stock Repurchased During Period, Shares Repurchase of shares (in shares) Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] Changes in accumulated other comprehensive income OCI, before Reclassifications, before Tax, Attributable to Parent Other comprehensive income (loss) before reclassification Other Comprehensive Income (Loss) before Reclassifications, Tax Federal income tax expense OCI, before Reclassifications, Net of Tax, Attributable to Parent Other comprehensive income (loss) before reclassification, net of tax Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Amounts reclassified from AOCI Reclassification from AOCI, Current Period, Tax Federal income tax expense Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Amounts reclassified from AOCI, net of tax Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Reportable segment Number of Reportable Segments Number of reportable segments Disaggregation of Revenue [Table] Product and Service [Axis] Product and Service [Domain] Represents the information pertaining to fronting premiums. Fronting Premiums Represents information pertaining to residential earthquake - insurance product. Residential Earthquake Represents information pertaining to commercial earthquake - insurance product. Commercial Earthquake Represents information pertaining to insurance for Inland Marine. Inland Marine Represents information pertaining to residential Casualty- insurance product. Casualty Represents information pertaining to insurance for Hawaii hurricane. Hawaii Hurricane Represents information pertaining to insurance service for commercial all risk. Commercial All Risk Represents information pertaining to insurance for flood. Residential Flood Represents information pertaining to insurance for specialty homeowners. Specialty Homeowners Others Disaggregation of Revenue [Line Items] Premiums Written, Gross [Abstract] Gross written premiums Premiums Written, Gross, Net Premiums Written, Gross, Net Amount, net Percentage of gross written premiums. Percentage of Gross Written Premiums % of GWP Geographical [Axis] Geographical [Domain] California Texas Washington Hawaii Oregon Florida Illinois New York Represents information pertaining to other states. Other States Consolidated Entities [Axis] Consolidated Entities [Domain] Subsidiaries [Member] Subsidiaries Represents information pertaining to Palomar Specialty Insurance company. Palomar Specialty Insurance Company [Member] PSIC Represents information pertaining to Palomar Excess and Surplus Insurance company. Palomar Excess and Surplus Insurance Company [Member] PESIC Effective Income Tax Rate Reconciliation, Percent [Abstract] Effective Income Tax Rate Reconciliation, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Statutory tax rate (as a percent) Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Earnings Per Share Net Income (Loss) Available to Common Stockholders, Basic Net income - Basic Net Income (Loss) Available to Common Stockholders, Diluted Net income - Diluted Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average common shares outstanding: Weighted Average Number Diluted Shares Outstanding Adjustment Common Share equivalents (in shares) Reinsurance Retention Policy [Table] Catastrophic Event [Axis] Catastrophic Event [Domain] Catastrophe Earthquake Represents information pertaining to insurance for continental U.S. hurricane events. U.S. Hurricane Reinsurance Retention [Line Items] Reinsurance Retention Policy Reinsurance, Amount Retained, Per Event Retention amount Reinsurance Policy, Excess of Loss Protection Amount Reinsurance Policy, Excess of Loss Protection Amount XOL reinsurance, protection Catastrophe Bond, Face Value Catastrophe Bond, Face Value Catastrophe bond, face value Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Domain] Revolving credit facility Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Represents the information pertaining to U.S. Bank Credit Agreement. U.S. Bank Credit Agreement Variable Rate [Axis] Variable Rate [Domain] Represents the information pertaining to SOFR rate. SOFR Rate Alternate Base Rate Line of Credit Facility [Line Items] Line of Credit Facility, Maximum Borrowing Capacity Maximum credit facility borrowing amount Debt Instrument, Basis Spread on Variable Rate Interest rate spread (as a percent) Line of Credit Facility, Commitment Fee Percentage Line of credit facility, commitment fee percentage The amount of prepayment premium in a line of credit facility. Line of Credit Prepayment Premium Line of credit prepayment premium Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB) as percentage of statutory admitted assets, Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available As Percentage of Statutory Admitted Assets Percentage of borrowing capacity Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate Federal home loan bank, advances, branch of FHLB bank, interest rate Interest Expense, Loans from Other Federal Home Loan Banks Interest expense on the FHLB Line of Credit Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB) of statutory admitted assets. Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available of Statutory Admitted Assets Amount of borrowing capacity Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances Federal home loan bank, advances, branch of FHLB bank, amount of advances