| Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
The following table summarizes, by major security type, the Company's assets that are measured at fair value on a recurring basis, and placement within the fair value hierarchy (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | As of June 30, 2026 | | Fair Value | | Level 1 | | Level 2 | | Level 3 | | Assets | | | | | | | | | Money market funds | $ | 53,359 | | | $ | 53,359 | | | $ | — | | | $ | — | | | Fixed maturities: | | | | | | | | | Mortgage-backed securities and collateralized mortgage obligations | 24,071 | | | — | | | 24,071 | | | — | | | Other asset-backed securities | 26,662 | | | — | | | 26,662 | | | — | | | Corporate bonds | 57,272 | | | — | | | 57,272 | | | — | | | | | | | | | | | | | | | | | | | U.S. treasury securities | 95,401 | | | — | | | 95,401 | | | — | | | | | | | | | | | Total | $ | 256,765 | | | $ | 53,359 | | | $ | 203,406 | | | $ | — | | | | | | | | | | | As of December 31, 2025 | | Fair Value | | Level 1 | | Level 2 | | Level 3 | | Assets | | | | | | | | | Money market funds | $ | 46,818 | | | $ | 46,818 | | | $ | — | | | $ | — | | | Fixed maturities: | | | | | | | | | Mortgage-backed securities and collateralized mortgage obligations | 24,687 | | | — | | | 24,687 | | | — | | | Other asset-backed securities | 23,837 | | | — | | | 23,837 | | | — | | | Corporate bonds | 47,835 | | | — | | | 47,835 | | | — | | | | | | | | | | | | | | | | | | | U.S. treasury securities | 104,158 | | | — | | | 104,158 | | | — | | | Total | $ | 247,335 | | | $ | 46,818 | | | $ | 200,517 | | | $ | — | |
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