CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 47,837	$ 33,227
Other comprehensive (loss)/incomes:
Net unrealized (losses)/gains on available-for-sale securities	(86,267)	66,364
Net changes in held-to-maturity securities	(23)	(2,157)
Net unrealized gains on cash flow hedges	31,204	18,916
Other comprehensive (loss)/income before tax	(55,086)	83,123
Income tax benefit/(expense) related to other comprehensive (loss)/income	11,568	(17,456)
Other comprehensive (loss)/income net of tax	(43,518)	65,667
Comprehensive income	$ 4,319	$ 98,894