Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 49,127	$ 45,149	$ 104,865	$ 92,842
Other comprehensive income (loss), after-tax:
Change in unrealized gain (loss) on available-for-sale securities	(13,677)	(49,242)	10,301	(128,595)
Reclassification of gain on sale of available-for-sale securities	0	0	(285)	0
Reclassification of gain on held-to-maturity securities	(686)	(701)	(1,324)	(1,405)
Change in unrealized gain (loss) on cash flow hedges	(3,338)	535	(2,063)	2,286
Reclassification of loss on cash flow hedges	211	187	238	456
Total other comprehensive income (loss), after-tax	(17,490)	(49,221)	6,867	(127,258)
Comprehensive income (loss)	$ 31,637	$ (4,072)	$ 111,732	$ (34,416)