Consolidated Statements Of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
INTEREST INCOME:
Interest and fees on loans	$ 660,732	$ 528,174	$ 554,967
Interest on investment securities	52,220	35,492	39,362
Interest on other investments	3,163	2,866	4,549
Total interest income	716,115	566,532	598,878
INTEREST EXPENSE:
Interest on deposits	114,839	42,011	110,369
Interest Expense, FHLB and FRB borrowings	11,525	2,561	6,865
Interest on other borrowings and convertible notes	11,330	9,190	14,146
Total interest expense	137,694	53,762	131,380
NET INTEREST INCOME BEFORE PROVISION (CREDIT) FOR CREDIT LOSSES	578,421	512,770	467,498
PROVISION (CREDIT) FOR CREDIT LOSSES	9,600	(12,200)	95,000
NET INTEREST INCOME AFTER PROVISION (CREDIT) FOR CREDIT LOSSES	568,821	524,970	372,498
NONINTEREST INCOME:
Service fees on deposit accounts	8,938	7,275	12,443
International service fees	3,134	3,586	3,139
Loan servicing fees, net	3,588	3,367	2,809
Wire transfer fees	3,477	3,519	3,577
Swap fees	2,605	1,458	4,066
Net gains on sales of SBA loans	16,343	8,448	0
Net gains on sales of residential mortgage loans	882	4,435	8,004
Net losses on sales of other loans	193	0	0
Net gains on sales of securities available for sale	0	0	7,531
Other income and fees	12,237	11,506	11,863
Total noninterest income	51,397	43,594	53,432
NONINTEREST EXPENSE:
Salaries and employee benefits	204,719	175,151	162,922
Occupancy	28,267	28,898	28,917
Furniture and equipment	19,434	18,079	17,548
Advertising and marketing	7,470	8,707	6,284
Data processing and communications	10,683	10,331	9,344
Professional fees	6,314	12,168	8,170
Investments in affordable housing partnership expenses	8,742	11,067	13,146
FDIC assessments	6,248	5,109	5,544
Credit related expenses	5,897	4,400	6,817
OREO expense, net	315	1,638	3,865
Software impairment	0	2,146	0
Earnings credit rebate	10,998	1,842	654
Federal Home Loan Bank Prepayment Fee	0	0	2,367
Restructuring Costs	0	0	3,584
Other	15,083	13,756	14,477
Total noninterest expense	324,170	293,292	283,639
INCOME BEFORE INCOME TAXES	296,048	275,272	142,291
INCOME TAX PROVISION	77,771	70,700	30,776
NET INCOME	$ 218,277	$ 204,572	$ 111,515
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 1.82	$ 1.67	$ 0.90
Diluted (in dollars per share)	$ 1.81	$ 1.66	$ 0.90