CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest and dividend income:
Loans	$ 210,636	$ 173,787
Investment securities	27,110	23,247
Money market investments and interest-bearing cash accounts	4,650	820
Total interest and dividend income	242,396	197,854
Interest expense:
Deposits	29,885	7,652
Advances from the FHLB:
Short-term advances from the FHLB	4,341	0
Long-term advances from FHLB	2,835	1,063
Other long-term borrowings	3,381	1,333
Total interest expense	41,511	12,230
Net interest income	200,885	185,624
Provision for credit losses - expense (benefit):
Loans and finance leases	16,256	(16,989)
Provision for credit losses - expense (benefit)	15,502	(13,802)
Net interest income after provision for credit losses	185,383	199,426
Non-interest income:
Service charges and fees on deposit accounts	9,541	9,363
Mortgage banking activities	2,812	5,206
Insurance commission income	4,847	5,275
Card and processing income	10,918	9,681
Other non-interest income	4,400	3,333
Total non-interest income	32,518	32,858
Non-interest expenses:
Employees' compensation and benefits	56,422	49,554
Occupancy and equipment	21,186	22,386
Business promotion	3,975	3,463
Professional service fees	11,973	10,594
Taxes, other than income taxes	5,112	5,018
FDIC deposit insurance	2,133	1,673
Net gain on OREO operations	(1,996)	(720)
Credit and debit card processing expenses	5,318	4,121
Communications	2,216	2,151
Other non-interest expenses	8,929	8,419
Total non-interest expenses	115,268	106,659
Income before income taxes	102,633	125,625
Income tax expense	31,935	43,025
Net income	70,698	82,600
Net income attributable to common stockholders	$ 70,698	$ 82,600
Net income per common share:
Basic	$ 0.39	$ 0.42
Diluted	$ 0.39	$ 0.41
Short-term Debt [Member]
Interest expense:
Securities sold under agreements to repurchase	$ 1,069	$ 0
Long-term Debt [Member]
Interest expense:
Securities sold under agreements to repurchase	0	2,182
Debt Securities [Member]
Provision for credit losses - expense (benefit):
Other credit losses	(649)	3,365
Unfunded Loan Commitment [Member]
Provision for credit losses - expense (benefit):
Other credit losses	$ (105)	$ (178)