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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2020
Accumulated Other Comprehensive Income [Abstract] |
Summary of Changes In Accumulated Other Comprehensive Income (Loss) |
| Unrealized gains on available for sale securities (a) |  | Unrealized gain on pension liability (a) |  | Total (a)
Balance as of December 31, 2019 | $ | 354 |  | $ | 833 |  | $ | 1,187
Other comprehensive income (loss) before reclassification |  | 3,798 |  |  | 190 |  |  | 3,988
Amount reclassified from accumulated other comprehensive loss |  | (56) |  |  | — |  |  | (56)
Total other comprehensive income |  | 3,742 |  |  | 190 |  |  | 3,932
Balance as of December 31, 2020 | $ | 4,096 |  | $ | 1,023 |  | $ | 5,119
| Unrealized gains on available for sale securities (a) |  | Unrealized gain on pension liability (a) |  |
Balance as of December 31, 2018 | $ | (5,558) |  | $ | 538 |  | $ | (5,020)
Other comprehensive income (loss) before reclassification |  | 6,113 |  |  | 295 |  |  | 6,408
Amount reclassified from accumulated other comprehensive loss |  | (201) |  |  | — |  |  | (201)
Total other comprehensive |  | 5,912 |  |  | 295 |  |  | 6,207
Balance as of December 31, 2019 | $ | 354 |  | $ | 833 |  | $ | 1,187
(a) All amounts are net of tax. Amounts in parentheses indicate debits.
Significant Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) |
|  | Amount Reclassified |  |
|  | From Accumulated |  | Affected Line Item in
|  | Other |  | Consolidated
|  | Comprehensive |  | Statements of
Details about other comprehensive income |  | Income (a) |  | Income
|  | Twelve months |  | Twelve months |  |
|  | ended |  | ended |  |
|  | December 31, |  | December 31, |  |
|  | 2020 |  | 2019 |  |
Unrealized gains on available for sale securities |  | $ | 71 |  | $ | 254 |  | Net realized gains on sales of securities
|  |  | (15) |  |  | (53) |  | Income tax expense
|  | $ | 56 |  | $ | 201 |  |
(a)Amounts in parentheses indicate debits to net income.

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