Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 45,149	$ 38,405	$ 92,842	$ 68,331
Other comprehensive income (loss), after-tax:
Change in unrealized gain (loss) on available-for-sale securities	(49,242)	2,850	(128,595)	(8,070)
Reclassification of gain on held-to-maturity securities	(701)	(837)	(1,405)	(1,986)
Change in unrealized gain (loss) on cash flow hedges arising during the period	535	(205)	2,286	642
Reclassification of loss on cash flow hedges	187	287	456	566
Total other comprehensive income (loss), after-tax	(49,221)	2,095	(127,258)	(8,848)
Comprehensive income (loss)	$ (4,072)	$ 40,500	$ (34,416)	$ 59,483