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Investments - Cost or Amortized Cost and Fair Value of Securities Available for Sale (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | $ 1,138,190 | $ 1,061,192 |
Allowance for Expected Credit Losses | (672) | (489) | $ (186)
Gross Unrealized Gains | 383 | 1,129 |
Gross Unrealized Losses | (116,895) | (21,377) |
Fair Value | 1,021,006 | 1,040,455 |
U.S. government obligations and agencies | Fixed Maturities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | 21,403 | 27,076 |
Allowance for Expected Credit Losses | 0 | 0 |
Gross Unrealized Gains | 0 | 64 |
Gross Unrealized Losses | (791) | (334) |
Fair Value | 20,612 | 26,806 |
Corporate bonds | Fixed Maturities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | 763,806 | 687,058 |
Allowance for Expected Credit Losses | (548) | (371) |
Gross Unrealized Gains | 52 | 843 |
Gross Unrealized Losses | (80,813) | (13,725) |
Fair Value | 682,497 | 673,805 |
Mortgage-backed and asset-backed securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | 328,934 | 322,844 |
Fair Value | 297,393 | 316,118 |
Mortgage-backed and asset-backed securities | Fixed Maturities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | 328,934 | 322,844 |
Allowance for Expected Credit Losses | 0 | 0 |
Gross Unrealized Gains | 331 | 194 |
Gross Unrealized Losses | (31,872) | (6,920) |
Fair Value | 297,393 | 316,118 |
Municipal bonds | Fixed Maturities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | 14,924 | 14,925 |
Allowance for Expected Credit Losses | 0 | (1) |
Gross Unrealized Gains | 0 | 0 |
Gross Unrealized Losses | (1,933) | (350) |
Fair Value | 12,991 | 14,574 |
Redeemable preferred stock |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Allowance for Expected Credit Losses | (124) | (117) | $ (38)
Redeemable preferred stock | Fixed Maturities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Amortized Cost | 9,123 | 9,289 |
Allowance for Expected Credit Losses | (124) | (117) |
Gross Unrealized Gains | 0 | 28 |
Gross Unrealized Losses | (1,486) | (48) |
Fair Value | $ 7,513 | $ 9,152 |

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