CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income
Loans and lease financing	$ 444,488	$ 496,523	$ 574,013
Available-for-sale securities	101,410	81,808	92,505
Other	3,413	4,428	12,174
Total interest income	549,311	582,759	678,692
Interest expense
Deposits	13,853	35,471	87,865
Short-term and long-term borrowings	4,899	11,554	17,425
Total interest expense	18,752	47,025	105,290
Net interest income	530,559	535,734	573,402
Provision for credit losses	(39,000)	121,718	13,800
Net interest income (expense) after benefit for credit losses	569,559	414,016	559,602
Noninterest income
Service charges on deposit accounts	27,510	28,169	33,778
Credit and debit card fees	63,580	55,451	66,749
Other service charges and fees	38,578	33,876	36,253
Trust and investment services income	34,719	35,652	35,102
Bank-owned life insurance	13,185	15,754	15,479
Investment securities gains (losses), net	102	(114)	(2,715)
Other	7,242	28,592	7,887
Total noninterest income	184,916	197,380	192,533
Noninterest expense
Salaries and employee benefits	182,384	174,221	173,098
Contracted services and professional fees	63,349	60,546	56,321
Occupancy	29,348	28,821	28,753
Equipment	24,719	20,277	17,343
Regulatory assessment and fees	8,245	8,659	7,390
Advertising and marketing	6,108	5,695	6,910
Card rewards program	25,244	22,114	29,961
Other	66,082	47,339	50,661
Total noninterest expense	405,479	367,672	370,437
Income before provision for income taxes	348,996	243,724	381,698
Provision for income taxes	83,261	57,970	97,306
Net income	$ 265,735	$ 185,754	$ 284,392
Basic earnings per share (in dollars per share)	$ 2.06	$ 1.43	$ 2.14
Diluted earnings per share (in dollars per share)	$ 2.05	$ 1.43	$ 2.13
Basic weighted-average outstanding shares (in shares)	128,963,131	129,890,225	133,076,489
Diluted weighted-average outstanding shares (in shares)	129,537,922	130,220,077	133,387,157