Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 54,284	$ 74,389
Adjustments to reconcile net income to net cash provided by operating activities:
Provision (reversal of provision) for credit losses	6,782	(11,524)
Depreciation of premises and equipment	3,323	3,523
Net amortization of investment securities premiums and discounts	1,168	2,078
Net gain on sales of investment securities	(30)	(140)
Net gain on mortgage banking activities	(3,976)	(12,623)
Bank owned life insurance income	(2,557)	(3,262)
Stock-based compensation	2,998	2,674
Intangible expenses	992	712
Other adjustments to reconcile net income to cash used in operating activities	(2,896)	(4,956)
Originations of loans held for sale	(198,547)	(396,418)
Proceeds from the sale of loans held for sale	215,424	417,920
Contributions to pension and other postretirement benefit plans	(189)	(198)
Decrease (increase) in accrued interest receivable and other assets	2,252	(882)
Increase (decrease) in accrued interest payable and other liabilities	4,449	(5,750)
Net cash provided by operating activities	83,477	65,543
Cash flows from investing activities:
Proceeds from sale of premises and equipment	6,844	0
Purchases of premises and equipment	(3,673)	(3,241)
Proceeds from maturities, calls and principal repayments of securities held-to-maturity	27,700	52,121
Proceeds from maturities, calls and principal repayments of securities available-for-sale	25,132	40,088
Proceeds from sales of securities available-for-sale	1,530	4,135
Purchases of investment securities held-to-maturity	(10,427)	(14,852)
Purchases of investment securities available-for-sale	(111,611)	(102,585)
Proceeds from sales of money market mutual funds	3,506	5,818
Purchases of money market mutual funds	(3,708)	(5,336)
Proceeds from sales of other real estate owned	0	7,255
Net increase in other investments	(1,289)	(496)
Proceeds from sale of loans originally held-for-investment	2,500	996
Net (increase) decrease in loans and leases	(562,235)	54,661
Proceeds from bank owned life insurance	1,221	2,302
Net cash (used in) provided by investing activities	(624,510)	40,866
Cash flows from financing activities:
Net (decrease) increase in deposits	(268,171)	695,414
Net increase (decrease) in short-term borrowings	60,605	(3,805)
Repayment of long-term debt	0	(15,000)
Repayment of subordinated debt	0	(85,000)
Payment of contingent consideration on acquisitions	0	(58)
Payment, Tax Withholding, Share-based Payment Arrangement	0	(355)
Purchases of treasury stock	(12,284)	(295)
Stock issued under dividend reinvestment and employee stock purchase plans	1,934	1,824
Proceeds from exercise of stock options	575	1,045
Cash dividends paid	(18,466)	(17,680)
Net cash (used in) provided by financing activities	(235,807)	576,090
Net (decrease) increase in cash and cash equivalents	(776,840)	682,499
Cash and cash equivalents at beginning of year	890,150	219,858
Cash and cash equivalents at end of period	113,310	902,357
Supplemental disclosures of cash flow information:
Cash paid for interest	20,095	18,516
Cash paid for income taxes, net of refunds	6,629	22,327
Transfer of loans to other real estate owned	18,325	126
Transfer of loans to loans held for sale	$ 2,500	$ 996