CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 127,391	$ 153,148
Unrealized losses on available-for-sale securities
Before tax	(206,017)	(60,726)
Tax effect	54,903	16,207
Net of tax	(151,114)	(44,519)
Reclassification of net gains on available-for-sale securities included in net income
Before tax	250	210
Tax effect	(67)	(56)
Net of tax	183	154
Reclassification of amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale
Before tax	42	57
Tax effect	(11)	(15)
Net of tax	31	42
Net unrealized losses on available-for-sale securities	(151,328)	(44,715)
Unrealized gains on derivative instruments
Before tax	39,481	50,792
Tax effect	(10,532)	(13,535)
Net unrealized gains on derivative instruments	28,949	37,257
Foreign currency adjustment
Before tax	2,842	2,734
Tax effect	(554)	(554)
Net foreign currency adjustment	2,288	2,180
Total other comprehensive loss	(120,091)	(5,278)
Comprehensive income	$ 7,300	$ 147,870