Investment Securities - Summary of Fixed Maturity Securities Available for Sale (Detail) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost | $ 72,930 | $ 64,648 |
| Gross Unrealized Gains | 60 | 174 |
| Gross Unrealized Losses | (5,056) | (4,639) |
| Fair Value | 67,934 | 60,183 |
| Mortgage-backed Securities, Principally Obligations of US Federal Agencies [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost | 51,481 | 45,392 |
| Gross Unrealized Gains | 60 | 160 |
| Gross Unrealized Losses | (3,732) | (3,381) |
| Fair Value | 47,809 | 42,171 |
| State and Municipalities [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost | 21,312 | 19,117 |
| Gross Unrealized Gains | 0 | 14 |
| Gross Unrealized Losses | (1,315) | (1,251) |
| Fair Value | 19,997 | 17,880 |
| Agency Bonds [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost | 137 | 139 |
| Gross Unrealized Gains | 0 | 0 |
| Gross Unrealized Losses | (9) | (7) |
| Fair Value | $ 128 | $ 132 |
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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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