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Basis of Accounting and Consolidation - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Realized gains on available-for-sale securities | $ 73 | $ 287 | $ 77 | $ 818
Tax effect | (3,357) | (3,096) | (4,025) | (6,268)
Total reclassifications out of accumulated other comprehensive income | 52 | 204 | 55 | 581
Accumulated Defined Benefit Plans Adjustment Attributable to Parent |  |  |  |
Realized gains on available-for-sale securities | 73 | 287 | 77 | 818
Tax effect | $ (21) | $ (83) | $ (22) | $ (237)

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