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Compensation Plans - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Payment Arrangement [Abstract] |  |  |
Other comprehensive income (loss), securities, available-for-sale, unrealized holding gain (loss) arising during period, before tax | $ 31,798 | $ 38,764 | $ (6,143)
Other comprehensive income (loss), securities, available-for-sale, unrealized holding gain (loss) arising during period, tax | 7,854 | 9,575 | (1,517)
Other comprehensive income (loss), securities, available-for-sale, unrealized holding gain (loss) arising during period, net of tax | 23,944 | 29,189 | (4,626)
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, before tax | (421) | 49 | (9)
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, tax | (104) | 12 | (2)
Reclassification adjustment for realized gains on sale of securities available for sale included in net income, net of tax | (317) | 37 | (7)
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, before of tax | (2,537) | (44) | 4
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, tax | (627) | (11) | 1
Other Comprehensive Income (Loss), Reclassification of (gain) loss on held to maturity securities, net of tax | (1,910) | (33) | 3
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, before tax | (7,898) | (3,004) | 0
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, tax | (1,951) | (742) | 0
Other comprehensive income (loss), unrealized gain (loss) on derivatives arising during period, net of tax | (5,947) | (2,262) | 0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, before tax | 4,782 | 133 | 0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, tax | 1,181 | 33 | 0
Other comprehensive income (loss), reclassification adjustment from AOCI on derivatives, net of tax | 3,601 | 100 | 0
Other comprehensive income (loss) before tax | 25,724 | 35,898 | (6,148)
Other comprehensive income (loss) tax | 6,353 | 8,867 | (1,518)
Other comprehensive income (loss), net | $ 19,371 | $ 27,031 | $ (4,630)

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