CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Other Comprehensive Income [Abstract]
Net income	$ 21,798	$ 2,966
Securities available-for-sale
Unrealized holding gains (losses) arising during the period	(40,131)	16,665
Reclassification adjustments for net gains included in net income	(1,462)	(1,375)
Tax effect	11,582	(4,258)
Net of tax	(30,011)	11,032
Cash flow hedges
Unrealized holding gains arising during the period	4,992
Reclassification adjustments for net losses included in net income	21	21
Tax effect	(1,396)	(5)
Net of tax	3,617	16
Total other comprehensive income (loss)	(26,394)	11,048
Comprehensive income (loss)	$ (4,596)	$ 14,014