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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 | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] |  |  |  |
Realized gains on available-for-sale securities | $ 95 | $ 51 | $ 913 | $ 323
Tax effect | (28) | (15) | (265) | (94)
Total reclassifications out of accumulated other comprehensive income | $ 67 | $ 36 | $ 648 | $ 229

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