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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2022
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] | The following tables set forth our assets that are measured at fair value on a recurring basis as of the dates indicated.
March 31, 2022 | Level 1 |  | Level 2 |  | Level 3 |  | Total Fair Value
(In thousands) |  |  |
Financial Assets |  |  |  |  |  |  |
Fixed maturity securities available-for-sale |  |  |  |  |  |  |
U.S. Treasury and U.S. Government-sponsored enterprises | $ | 10,170 |  |  | 4,149 |  |  | — |  |  | 14,319 |
States and political subdivisions | — |  |  | 358,395 |  |  | — |  |  | 358,395 |
Corporate | 50 |  |  | 814,080 |  |  | — |  |  | 814,130 |
Residential mortgage-backed | — |  |  | 123,162 |  |  | — |  |  | 123,162 |
Asset-backed | — |  |  | 45,297 |  |  | — |  |  | 45,297 |
Foreign governments | — |  |  | 107 |  |  | — |  |  | 107 |
Total fixed maturity securities available-for-sale | 10,220 |  |  | 1,345,190 |  |  | — |  |  | 1,355,410 |
Equity securities |  |  |  |  |  |  |
Stock mutual funds | 3,476 |  |  | — |  |  | — |  |  | 3,476 |
Bond mutual funds | 4,880 |  |  | — |  |  | — |  |  | 4,880 |
Common stock | 957 |  |  | — |  |  | — |  |  | 957 |
Non-redeemable preferred stock | 10 |  |  | — |  |  | — |  |  | 10 |
Non-redeemable preferred stock fund | 4,579 |  |  | — |  |  | — |  |  | 4,579 |
Total equity securities | 13,902 |  |  | — |  |  | — |  |  | 13,902 |
Other long-term investments (1) | — |  |  | — |  |  | — |  |  | 62,564 |
Total financial assets | $ | 24,122 |  |  | 1,345,190 |  |  | — |  |  | 1,431,876 |
(1) In accordance with Subtopic 820-10, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient are not classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.
December 31, 2021 | Level 1 |  | Level 2 |  | Level 3 |  | Total Fair Value
(In thousands) |  |  |
Financial Assets |  |  |  |  |  |  |
Fixed maturity securities available-for-sale |  |  |  |  |  |  |
U.S. Treasury and U.S. Government-sponsored enterprises | $ | 10,611 |  |  | 4,459 |  |  | — |  |  | 15,070 |
States and political subdivisions | — |  |  | 383,958 |  |  | — |  |  | 383,958 |
Corporate | 51 |  |  | 892,957 |  |  | — |  |  | 893,008 |
Residential mortgage-backed | — |  |  | 133,795 |  |  | — |  |  | 133,795 |
Asset-backed | — |  |  | 44,676 |  |  | — |  |  | 44,676 |
Foreign governments | — |  |  | 110 |  |  | — |  |  | 110 |
Total fixed maturity securities available-for-sale | 10,662 |  |  | 1,459,955 |  |  | — |  |  | 1,470,617 |
Equity securities |  |  |  |  |  |  |
Stock mutual funds | 3,571 |  |  | — |  |  | — |  |  | 3,571 |
Bond mutual funds | 5,060 |  |  | — |  |  | — |  |  | 5,060 |
Common stock | 990 |  |  | — |  |  | — |  |  | 990 |
Non-redeemable preferred stock | 161 |  |  | — |  |  | — |  |  | 161 |
Non-redeemable preferred stock fund | 5,062 |  |  | — |  |  | — |  |  | 5,062 |
Total equity securities | 14,844 |  |  | — |  |  | — |  |  | 14,844 |
Other long-term investments (1) | — |  |  | — |  |  | — |  |  | 56,038 |
Total financial assets | $ | 25,506 |  |  | 1,459,955 |  |  | — |  |  | 1,541,499 |
(1) In accordance with Subtopic 820-10, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient are not classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.
Fair Value Measurements, Recurring and Nonrecurring | These investments are included in other long-term investments on the consolidated balance sheets.
|  | March 31, 2022 |  | December 31, 2021
|  | Fair Value Using NAV Per Share | Unfunded Commit- ments | Life in years |  | Fair Value Using NAV Per Share | Unfunded Commit- ments | Life in years
(In thousands, except years) |
Limited partnerships |  |  |  |  |  |  |
Middle market | Investments in privately-originated, performing senior secured debt primarily in North America-based companies | $ | 27,336 |  | 13,593 |  | 9 |  | $ | 21,947 |  | 18,712 |  | 10
Global equity fund | Investments in common stocks of U.S., international developed and emerging markets with a focus on long-term capital growth | 9,890 |  | — |  | 0 |  | 10,607 |  | — |  | 0
Late-stage growth | Investments in private late-stage, established companies seeking capital to accelerate growth prior to an IPO or sale | 21,564 |  | 7,256 |  | 6 |  | 20,468 |  | 4,459 |  | 6
Infrastructure | Investments in climate infrastructure assets, focusing on renewable power generation in wind and solar energy | 3,774 |  | 15,970 |  | 11 |  | 3,016 |  | 16,653 |  | 12
Total limited partnerships | $ | 62,564 |  | 36,819 |  |  |  | $ | 56,038 |  | 39,824 |  |
Fair Value, by Balance Sheet Grouping [Table Text Block] | The carrying amount and fair value for the financial assets and liabilities on the consolidated balance sheets not otherwise disclosed for the periods indicated are as follows:
| March 31, 2022 |  | December 31, 2021
(In thousands) | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Financial Assets: |  |  |  |  |  |  |
Policy loans | $ | 79,345 |  |  | 79,345 |  |  | 80,307 |  |  | 80,307 |
Commercial mortgage loan | 1,000 |  |  | 1,000 |  |  | 1,000 |  |  | 1,000 |
Residential mortgage loans | 145 |  |  | 167 |  |  | 148 |  |  | 169 |
Cash and cash equivalents | 21,298 |  |  | 21,298 |  |  | 27,294 |  |  | 27,294 |
Financial Liabilities: |  |  |  |  |  |  |
Annuity - investment contracts | 65,063 |  |  | 67,272 |  |  | 64,384 |  |  | 72,352 |
Fair Value Option, Disclosures | The following table summarizes the carrying amounts of these investments.
Carrying Value (In thousands) | March 31, 2022 |  | December 31, 2021
Other long-term investments: |  |  |
Limited partnerships | $ | 62,564 |  |  | 56,038 |
FHLB common stock | 192 |  |  | 192 |
Mortgage loans | 1,145 |  |  | 1,148 |
All other investments | 26 |  |  | 21 |
Total other long-term investments | $ | 63,927 |  |  | 57,399 |

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