CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 30,555	$ 18,638	$ 63,252	$ 35,171
Other comprehensive (loss) income:
Unrealized (loss) gain on debt securities (net of tax of $102 and $214 in 2021 and net tax of $11 and $709 in 2020, respectively)	(387)	(44)	(803)	2,105
Accretion of unrealized loss on debt securities reclassified to held-to-maturity (net of tax of $70 and $143 in 2021 and $76 and $160 in 2020, respectively)	101	113	208	228
Reclassification adjustment for gains included in net income (net of tax of $173 in 2020)	0	547	0	0
Total other comprehensive (loss) income	(286)	616	(595)	2,333
Total comprehensive income	30,269	19,254	62,657	37,504
Less: Dividends on preferred shares	1,004	0	2,008	0
Comprehensive income available to common stockholders	$ 29,265	$ 19,254	$ 60,649	$ 37,504