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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2023
Equity [Abstract] |
Summary of the components of accumulated other comprehensive income | The following table summarizes the changes in AOCI by component for the:
| Three Months Ended June 30
| 2023 |  | 2022
| Unrealized Gains (Losses) on AFS Securities |  |  |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  |  |  | Defined Benefit Pension Plan |  | Total
Balance, April 1 | $ | (28,948) |  |  |  |  | $ | (1,366) |  |  | $ | (30,314) |  |  | $ | (14,319) |  |  |  |  | $ | (2,014) |  |  | $ | (16,333) |
OCI before reclassifications | (7,638) |  |  |  |  | — |  |  | (7,638) |  |  | (10,670) |  |  |  |  | — |  |  | (10,670) |
Amounts reclassified from AOCI | (66) |  |  |  |  | — |  |  | (66) |  |  | — |  |  |  |  | — |  |  | — |
Subtotal | (7,704) |  |  |  |  | — |  |  | (7,704) |  |  | (10,670) |  |  |  |  | — |  |  | (10,670) |
Tax effect | 1,601 |  |  |  |  | — |  |  | 1,601 |  |  | 2,163 |  |  |  |  | — |  |  | 2,163 |
OCI, net of tax | (6,103) |  |  |  |  | — |  |  | (6,103) |  |  | (8,507) |  |  |  |  | — |  |  | (8,507) |
Balance, June 30 | $ | (35,051) |  |  |  |  | $ | (1,366) |  |  | $ | (36,417) |  |  | $ | (22,826) |  |  |  |  | $ | (2,014) |  |  | $ | (24,840) |
| Six Months Ended June 30
| 2023 |  | 2022
| Unrealized Gains (Losses) on AFS Securities |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Defined Benefit Pension Plan |  | Total
Balance, January 1 | $ | (35,828) |  |  | $ | (1,366) |  |  | $ | (37,194) |  |  | $ | 3,873 |  |  | $ | (2,014) |  |  | $ | 1,859 |
OCI before reclassifications | 972 |  |  | — |  |  | 972 |  |  | (33,598) |  |  | — |  |  | (33,598) |
Amounts reclassified from AOCI | (67) |  |  | — |  |  | (67) |  |  | — |  |  | — |  |  | — |
Subtotal | 905 |  |  | — |  |  | 905 |  |  | (33,598) |  |  | — |  |  | (33,598) |
Tax effect | (128) |  |  | — |  |  | (128) |  |  | 6,899 |  |  | — |  |  | 6,899 |
OCI, net of tax | 777 |  |  | — |  |  | 777 |  |  | (26,699) |  |  | — |  |  | (26,699) |
Balance, June 30 | $ | (35,051) |  |  | $ | (1,366) |  |  | $ | (36,417) |  |  | $ | (22,826) |  |  | $ | (2,014) |  |  | $ | (24,840) |
A summary of the components of unrealized gains on AFS securities included in OCI follows for the:
| Three Months Ended June 30
| 2023 |  | 2022
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | (79) |  |  | $ | (7,559) |  |  | $ | (7,638) |  |  | $ | (370) |  |  | $ | (10,300) |  |  | $ | (10,670) |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | (66) |  |  | (66) |  |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | (79) |  |  | (7,625) |  |  | (7,704) |  |  | (370) |  |  | (10,300) |  |  | (10,670) |
Tax effect | — |  |  | 1,601 |  |  | 1,601 |  |  | — |  |  | 2,163 |  |  | 2,163 |
Unrealized gains (losses), net of tax | $ | (79) |  |  | $ | (6,024) |  |  | $ | (6,103) |  |  | $ | (370) |  |  | $ | (8,137) |  |  | $ | (8,507) |
| Six Months Ended June 30
| 2023 |  | 2022
| Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total |  | Auction Rate Money Market Preferred Stocks |  | All Other AFS Securities |  | Total
Unrealized gains (losses) arising during the period | $ | 295 |  |  | $ | 677 |  |  | $ | 972 |  |  | $ | (745) |  |  | $ | (32,853) |  |  | $ | (33,598) |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | (67) |  |  | (67) |  |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | 295 |  |  | 610 |  |  | 905 |  |  | (745) |  |  | (32,853) |  |  | (33,598) |
Tax effect | — |  |  | (128) |  |  | (128) |  |  | — |  |  | 6,899 |  |  | 6,899 |
Unrealized gains (losses), net of tax | $ | 295 |  |  | $ | 482 |  |  | $ | 777 |  |  | $ | (745) |  |  | $ | (25,954) |  |  | $ | (26,699) |

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