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v3.22.2.2

Investments - Carrying value and estimated fair value (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Apr. 01, 2022 | Dec. 31, 2021
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Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost | $ 772,677 |  | $ 1,098,373
Gross Unrealized Gains | 168 |  | 20,373
Gross Unrealized Losses | (104,545) |  | (9,538)
Available-for-sale debt securities | 668,300 |  | 1,109,208
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date | 305,482 |  | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 25 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (38,064) | $ (25,300) |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | 267,443 |  |
U.S. Government agencies |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost | 344 |  | 373
Gross Unrealized Gains | 0 |  | 6
Gross Unrealized Losses | (11) |  | 0
Available-for-sale debt securities | 333 |  | 379
U.S. Treasury securities |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost | 9,989 |  | 9,988
Gross Unrealized Gains | 0 |  | 0
Gross Unrealized Losses | (1,441) |  | (63)
Available-for-sale debt securities | 8,548 |  | 9,925
Obligations of states and political subdivisions |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost | 219,720 |  | 512,952
Gross Unrealized Gains | 28 |  | 16,703
Gross Unrealized Losses | (37,150) |  | (3,188)
Available-for-sale debt securities | 182,598 |  | 526,467
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date | 191,975 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 25 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (28,121) |  |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | 163,879 |  |
U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost | 123,093 |  | 213,471
Gross Unrealized Gains | 3 |  | 2,245
Gross Unrealized Losses | (7,756) |  | (1,277)
Available-for-sale debt securities | 115,340 |  | 214,439
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date | 10,350 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (1,317) |  |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | 9,033 |  |
Private label mortgage and asset backed securities |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost | 419,531 |  | 317,089
Gross Unrealized Gains | 137 |  | 824
Gross Unrealized Losses | (58,187) |  | (4,693)
Available-for-sale debt securities | 361,481 |  | 313,220
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date | 57,201 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (6,033) |  |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | 51,168 |  |
Corporate debt securities |  |  |
Schedule of Available-for-sale Securities |  |  |
Debt securities, amortized cost |  |  | 44,500
Gross Unrealized Gains |  |  | 595
Gross Unrealized Losses |  |  | (317)
Available-for-sale debt securities |  |  | $ 44,778
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, without Single Maturity Date | 45,956 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |  |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | (2,593) |  |
Debt Securities, Held-to-maturity, Maturity, without Single Maturity Date, Fair Value | $ 43,363 |  |

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