Changes in Accumulated Other Comprehensive Income by Component - Reclassification Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit	$ (8,299)	$ (6,592)
Net income	24,653	20,190
Realized Gains (Losses) on Sale of Available-for-sale Securities \| Amounts Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Losses from the sale of available-for-sale securities	(48)	(11)
Tax benefit	12	2
Net income	$ (36)	$ (9)

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details