Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income
Loans and fees on loans	$ 84,993	$ 58,961
Investment securities, taxable	2,929	3,762
Other interest earning assets	303	750
Total interest income	88,225	63,473
Interest expense
Deposits	16,944	23,255
Borrowings	1,331	57
Total interest expense	18,275	23,312
Net interest income	69,950	40,161
(Recovery of) provision for loan and lease credit losses	(873)	11,792
Net interest income after (recovery of) provision for loan and lease credit losses	70,823	28,369
Noninterest income
Loan servicing revenue	6,434	6,422
Loan servicing asset revaluation	1,493	(4,692)
Net gains on sales of loans	11,929	11,112
Net gain (loss) on loans accounted for under the fair value option	4,218	(10,638)
Equity method investments income (loss)	(1,157)	(2,478)
Equity security investments gains (losses), net	105	(64)
Loss on sale of investment securities available-for-sale, net		(79)
Lease income	2,599	2,624
Management fee income	1,934	1,644
Other noninterest income	3,502	1,891
Total noninterest income	31,057	5,742
Noninterest expense
Salaries and employee benefits	31,366	28,063
Travel expense	659	1,781
Professional services expense	3,831	1,937
Advertising and marketing expense	652	1,361
Occupancy expense	2,112	2,421
Data processing expense	3,894	3,157
Equipment expense	4,354	4,635
Other loan origination and maintenance expense	3,327	2,456
Renewable energy tax credit investment impairment	3,127
FDIC insurance	1,765	1,510
Other expense	3,185	2,170
Total noninterest expense	58,272	49,491
Income (loss) before taxes	43,608	(15,380)
Income tax expense (benefit)	4,181	(7,778)
Net income (loss)	$ 39,427	$ (7,602)
Basic earnings (loss) per share	$ 0.92	$ (0.19)
Diluted earnings (loss) per share	$ 0.88	$ (0.19)