Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 53,478	$ 2,923
Adjustments to reconcile net income to net cash provided by operating activities:
(Reversal of provision) provision for credit losses	(11,342)	45,580
Depreciation of premises and equipment	2,355	2,448
Net amortization of investment securities premiums and discounts	1,499	977
Net gain on sales of investment securities	(119)	(760)
Net gain on mortgage banking activities	(9,399)	(6,259)
Bank owned life insurance income	(2,337)	(1,466)
Stock-based compensation	1,763	1,139
Intangible expenses	498	651
Other adjustments to reconcile net income to cash used in operating activities	(2,838)	(985)
Originations of loans held for sale	(282,978)	(186,426)
Proceeds from the sale of loans held for sale	306,944	178,995
Contributions to pension and other postretirement benefit plans	(133)	(136)
Increase in accrued interest receivable and other assets	(1,253)	(12,160)
(Decrease) increase in accrued interest payable and other liabilities	(7,745)	1,062
Net cash provided by operating activities	48,393	25,583
Cash flows from investing activities:
Proceeds from sale of premises and equipment	0	8
Purchases of premises and equipment	(2,911)	(1,688)
Proceeds from maturities, calls and principal repayments of securities held-to-maturity	39,166	32,663
Proceeds from maturities, calls and principal repayments of securities available-for-sale	28,817	30,087
Proceeds from sales of securities available-for-sale	3,115	63,565
Purchases of investment securities held-to-maturity	(8,626)	(43,116)
Purchases of investment securities available-for-sale	(85,719)	(39,003)
Proceeds from sales of money market mutual funds	4,309	6,912
Purchases of money market mutual funds	(3,763)	(6,529)
Net decrease in other investments	2,955	62
Net increase in loans and leases	(24,701)	(591,521)
Proceeds from sales of other real estate owned	7,255	0
Proceeds from bank owned life insurance	2,290	0
Net cash used in investing activities	(37,813)	(548,560)
Cash flows from financing activities:
Net increase in deposits	75,974	509,253
Net increase in short-term borrowings	7,345	192,100
Proceeds from issuance of long-term debt	0	125,000
Repayment of long-term debt	(15,000)	(65,000)
Early Repayment of Subordinated Debt	(85,000)	0
Payment of contingent consideration on acquisitions	(58)	(61)
Purchases of treasury stock	(650)	(4,452)
Stock issued under dividend reinvestment and employee stock purchase plans	1,214	1,163
Proceeds from exercise of stock options	983	94
Cash dividends paid	(11,797)	(11,719)
Net cash (used in) provided by financing activities	(26,989)	746,378
Net (decrease) increase in cash and cash equivalents	(16,409)	223,401
Cash and cash equivalents at beginning of year	219,858	125,128
Cash and cash equivalents at end of period	203,449	348,529
Supplemental disclosures of cash flow information:
Cash paid for interest	12,377	17,535
Cash paid for income taxes, net of refunds	15,450	7,977
Transfer of loans to other real estate owned	126	8,125
Transfer of Portfolio Loans and Leases to Held-for-sale	$ 3,959	$ 14,416