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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 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 September 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, July 1 | $ | (35,051) |  |  |  |  | $ | (1,366) |  |  | $ | (36,417) |  |  | $ | (22,826) |  |  |  |  | $ | (2,014) |  |  | $ | (24,840) |
OCI before reclassifications | (6,708) |  |  |  |  | — |  |  | (6,708) |  |  | (22,815) |  |  |  |  | — |  |  | (22,815) |
Amounts reclassified from AOCI | — |  |  |  |  | — |  |  | — |  |  | — |  |  |  |  | — |  |  | — |
Subtotal | (6,708) |  |  |  |  | — |  |  | (6,708) |  |  | (22,815) |  |  |  |  | — |  |  | (22,815) |
Tax effect | 1,394 |  |  |  |  | — |  |  | 1,394 |  |  | 4,788 |  |  |  |  | — |  |  | 4,788 |
OCI, net of tax | (5,314) |  |  |  |  | — |  |  | (5,314) |  |  | (18,027) |  |  |  |  | — |  |  | (18,027) |
Balance, September 30 | $ | (40,365) |  |  |  |  | $ | (1,366) |  |  | $ | (41,731) |  |  | $ | (40,853) |  |  |  |  | $ | (2,014) |  |  | $ | (42,867) |
| Nine Months Ended September 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 | (5,736) |  |  | — |  |  | (5,736) |  |  | (56,413) |  |  | — |  |  | (56,413) |
Amounts reclassified from AOCI | (67) |  |  | — |  |  | (67) |  |  | — |  |  | — |  |  | — |
Subtotal | (5,803) |  |  | — |  |  | (5,803) |  |  | (56,413) |  |  | — |  |  | (56,413) |
Tax effect | 1,266 |  |  | — |  |  | 1,266 |  |  | 11,687 |  |  | — |  |  | 11,687 |
OCI, net of tax | (4,537) |  |  | — |  |  | (4,537) |  |  | (44,726) |  |  | — |  |  | (44,726) |
Balance, September 30 | $ | (40,365) |  |  | $ | (1,366) |  |  | $ | (41,731) |  |  | $ | (40,853) |  |  | $ | (2,014) |  |  | $ | (42,867) |
A summary of the components of unrealized gains on AFS securities included in OCI follows for the:
| Three Months Ended September 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 | $ | (67) |  |  | $ | (6,641) |  |  | $ | (6,708) |  |  | $ | (18) |  |  | $ | (22,797) |  |  | $ | (22,815) |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | (67) |  |  | (6,641) |  |  | (6,708) |  |  | (18) |  |  | (22,797) |  |  | (22,815) |
Tax effect | — |  |  | 1,394 |  |  | 1,394 |  |  | — |  |  | 4,788 |  |  | 4,788 |
Unrealized gains (losses), net of tax | $ | (67) |  |  | $ | (5,247) |  |  | $ | (5,314) |  |  | $ | (18) |  |  | $ | (18,009) |  |  | $ | (18,027) |
| Nine Months Ended September 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 | $ | 228 |  |  | $ | (5,964) |  |  | $ | (5,736) |  |  | $ | (763) |  |  | $ | (55,650) |  |  | $ | (56,413) |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | (67) |  |  | (67) |  |  | — |  |  | — |  |  | — |
Net unrealized gains (losses) | 228 |  |  | (6,031) |  |  | (5,803) |  |  | (763) |  |  | (55,650) |  |  | (56,413) |
Tax effect | — |  |  | 1,266 |  |  | 1,266 |  |  | — |  |  | 11,687 |  |  | 11,687 |
Unrealized gains (losses), net of tax | $ | 228 |  |  | $ | (4,765) |  |  | $ | (4,537) |  |  | $ | (763) |  |  | $ | (43,963) |  |  | $ | (44,726) |

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