| 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, 2025 | | Fair Value | | Level 1 | | Level 2 | | Level 3 | | Assets | | | | | | | | | Money market funds | $ | 57,309 | | | $ | 57,309 | | | $ | — | | | $ | — | | | Fixed maturities: | | | | | | | | | Mortgage-backed securities and collateralized mortgage obligations | 19,435 | | | — | | | 19,435 | | | — | | | Other asset-backed securities | 21,257 | | | — | | | 21,257 | | | — | | | Corporate bonds | 49,369 | | | — | | | 49,369 | | | — | | | | | | | | | | | | | | | | | | | U.S. Treasury securities | 88,371 | | | — | | | 88,371 | | | — | | | | | | | | | | | Total | $ | 235,741 | | | $ | 57,309 | | | $ | 178,432 | | | $ | — | | | | | | | | | | | As of December 31, 2024 | | Fair Value | | Level 1 | | Level 2 | | Level 3 | | Assets | | | | | | | | | Money market funds | $ | 91,534 | | | $ | 91,534 | | | $ | — | | | $ | — | | | Fixed maturities: | | | | | | | | | Mortgage-backed securities and collateralized mortgage obligations | 12,596 | | | — | | | 12,596 | | | — | | | Other asset-backed securities | 15,956 | | | — | | | 15,956 | | | — | | | Corporate bonds | 35,623 | | | — | | | 35,623 | | | — | | | | | | | | | | | | | | | | | | | U.S. Treasury securities | 70,291 | | | — | | | 70,291 | | | — | | | Preferred stock investment | 7,916 | | | — | | | — | | | 7,916 | | | Total | $ | 233,916 | | | $ | 91,534 | | | $ | 134,466 | | | $ | 7,916 | |
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