CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 33,227	$ 12,830
Other comprehensive income/(loss) before taxes:
Net unrealized gains/(losses) on available-for-sale securities	66,364	(99,316)
Net changes in held-to-maturity securities	(2,157)	(5,688)
Net unrealized gains/(losses) on cash flow hedges	18,916	(28,256)
Other comprehensive income/(loss), Before Tax	83,123	(133,260)
Income tax (expense)/benefit related to other comprehensive income/(loss)	(17,456)	27,984
Other comprehensive income/(loss) net of tax	65,667	(105,276)
Comprehensive income/(loss)	$ 98,894	$ (92,446)