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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income available to common shareholders	$ 19,814	$ 29,000
Unrealized (losses) gains on available-for-sale securities arising during the period	(20,240)	26,714
Reclassification adjustment for gains	(283)	(63)
Reclassification of unrealized gains on held-to-maturity securities to available-for-sale	0	1,562
Other comprehensive (loss) income before income taxes	(20,523)	28,213
Tax effect	4,918	(6,593)
Other comprehensive (loss) income, net of tax	(15,605)	21,620
Comprehensive Income, Net of Tax	$ 4,209	$ 50,620

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