CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 24,167	$ (4,926)	$ 87,419	$ 30,245
Other comprehensive (loss) income:
Unrealized (loss) gain on debt securities (net of tax benefit of $232 and $446 in 2021 and net of tax benefit of $105 and net of tax expense of $604 in 2020, respectively)	(855)	(461)	(1,658)	1,644
Accretion of unrealized loss on debt securities reclassified to held-to-maturity (net of tax expense of $66 and $209 in 2021 and $75 and $235 in 2020, respectively)	95	108	303	336
Reclassification adjustment for gains included in net income (net of tax expense of $45 and $45 in 2020)	0	168	0	168
Total other comprehensive (loss) income	(760)	(185)	(1,355)	2,148
Total comprehensive income (loss)	23,407	(5,111)	86,064	32,393
Less: Dividends on preferred shares	1,004	1,093	3,012	1,093
Comprehensive income (loss) available to common stockholders	$ 22,403	$ (6,204)	$ 83,052	$ 31,300