CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 110,076	$ 63,309	$ 88,574
Other comprehensive income:
Unrealized (loss) gain on debt securities (net of tax benefit of $1,142 in 2021, and tax expense of $411 and $470 in 2020 and 2019, respectively)	(3,837)	1,039	1,655
Accretion of unrealized loss on debt securities reclassified to held-to-maturity (net of tax expense of $272, $310 and $404 in 2021, 2020, and 2019, respectively)	395	446	587
Reclassification adjustment for gains included in net income (net of tax expense of $101 in 2020)	0	344	0
Total other comprehensive (loss) income	(3,442)	1,829	2,242
Total comprehensive income	106,634	65,138	90,816
Less: Dividends on preferred shares	4,016	2,097	0
Total comprehensive income available to common stockholders	$ 102,618	$ 63,041	$ 90,816