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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2020
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
| 2020 |  | 2019
| Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total
Balance, July 1 | $ | 11,139 |  |  | $ | (77) |  |  | $ | (2,695) |  |  | $ | 8,367 |  |  | $ | 3,417 |  |  | $ | 91 |  |  | $ | (2,741) |  |  | $ | 767 |
OCI before reclassifications | (66) |  |  | 20 |  |  | — |  |  | (46) |  |  | 1,724 |  |  | (37) |  |  | — |  |  | 1,687 |
Amounts reclassified from AOCI | — |  |  | — |  |  | — |  |  | — |  |  | (6) |  |  | — |  |  | — |  |  | (6) |
Subtotal | (66) |  |  | 20 |  |  | — |  |  | (46) |  |  | 1,718 |  |  | (37) |  |  | — |  |  | 1,681 |
Tax effect | 58 |  |  | (4) |  |  |  |  | 54 |  |  | (310) |  |  | 8 |  |  | — |  |  | (302) |
OCI, net of tax | (8) |  |  | 16 |  |  | — |  |  | 8 |  |  | 1,408 |  |  | (29) |  |  | — |  |  | 1,379 |
Balance, September 30 | $ | 11,131 |  |  | $ | (61) |  |  | $ | (2,695) |  |  | $ | 8,375 |  |  | $ | 4,825 |  |  | $ | 62 |  |  | $ | (2,741) |  |  | $ | 2,146 |
| Nine Months Ended September 30
| 2020 |  | 2019
| Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total |  | Unrealized Gains (Losses) on AFS Securities |  | Unrealized Gains (Losses) on Derivative Instruments |  | Defined Benefit Pension Plan |  | Total
Balance, January 1 | $ | 4,612 |  |  | $ | 54 |  |  | $ | (2,695) |  |  | $ | 1,971 |  |  | $ | (5,200) |  |  | $ | 256 |  |  | $ | (2,741) |  |  | $ | (7,685) |
OCI before reclassifications | 8,304 |  |  | (145) |  |  | — |  |  | 8,159 |  |  | 12,554 |  |  | (245) |  |  | — |  |  | 12,309 |
Amounts reclassified from AOCI | (71) |  |  | — |  |  | — |  |  | (71) |  |  | (6) |  |  | — |  |  | — |  |  | (6) |
Subtotal | 8,233 |  |  | (145) |  |  | — |  |  | 8,088 |  |  | 12,548 |  |  | (245) |  |  | — |  |  | 12,303 |
Tax effect | (1,714) |  |  | 30 |  |  | — |  |  | (1,684) |  |  | (2,523) |  |  | 51 |  |  | — |  |  | (2,472) |
OCI, net of tax | 6,519 |  |  | (115) |  |  | — |  |  | 6,404 |  |  | 10,025 |  |  | (194) |  |  | — |  |  | 9,831 |
Balance, September 30 | $ | 11,131 |  |  | $ | (61) |  |  | $ | (2,695) |  |  | $ | 8,375 |  |  | $ | 4,825 |  |  | $ | 62 |  |  | $ | (2,741) |  |  | $ | 2,146 |
A summary of the components of unrealized gains on AFS securities included in OCI follows for the:
| Three Months Ended September 30
| 2020 |  | 2019
| 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 | $ | 215 |  |  | $ | (281) |  |  | $ | (66) |  |  | $ | 240 |  |  | $ | 1,484 |  |  | $ | 1,724 |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | — |  |  | — |  |  | — |  |  | (6) |  |  | (6) |
Net unrealized gains (losses) | 215 |  |  | (281) |  |  | (66) |  |  | 240 |  |  | 1,478 |  |  | 1,718 |
Tax effect | — |  |  | 58 |  |  | 58 |  |  | — |  |  | (310) |  |  | (310) |
Unrealized gains (losses), net of tax | $ | 215 |  |  | $ | (223) |  |  | $ | (8) |  |  | $ | 240 |  |  | $ | 1,168 |  |  | $ | 1,408 |
| Nine Months Ended September 30
| 2020 |  | 2019
| 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 | $ | 75 |  |  | $ | 8,229 |  |  | $ | 8,304 |  |  | $ | 535 |  |  | $ | 12,019 |  |  | $ | 12,554 |
Reclassification adjustment for net (gains) losses included in net income | — |  |  | (71) |  |  | (71) |  |  | — |  |  | (6) |  |  | (6) |
Net unrealized gains (losses) | 75 |  |  | 8,158 |  |  | 8,233 |  |  | 535 |  |  | 12,013 |  |  | 12,548 |
Tax effect | — |  |  | (1,714) |  |  | (1,714) |  |  | — |  |  | (2,523) |  |  | (2,523) |
Unrealized gains (losses), net of tax | $ | 75 |  |  | $ | 6,444 |  |  | $ | 6,519 |  |  | $ | 535 |  |  | $ | 9,490 |  |  | $ | 10,025 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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