Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net income	$ 39,126	$ 39,846
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan losses	596	(2,796)
Depreciation and amortization of premises and equipment	2,420	2,441
Net amortization on securities	1,036	1,477
Amortization of intangible assets	636	812
Amortization of operating lease right-of-use assets	1,688	1,821
Excess tax benefit on stock-based compensation	(168)	(107)
Stock-based compensation expense	2,472	2,668
Bank owned life insurance income	(1,654)	(1,381)
Amortization of subordinated debt issuance costs	109	110
Proceeds from sale of loans held for sale	2,106	13,877
Originations of loans held for sale	(1,479)	(13,943)
Net gain on sale of loans held for sale	(60)	(110)
Net security losses (gains)	179	(467)
Net gains on sale of other real estate owned	(211)	0
Net change in other assets and other liabilities	(11,652)	(1,946)
Net cash provided by operating activities	35,144	42,302
Securities available for sale:
Proceeds from maturities, calls and principal paydowns	72,281	95,274
Purchases	(139,273)	(158,196)
Securities held to maturity:
Proceeds from maturities, calls and principal paydowns	29,028	66,282
Purchases	(191,092)	(42,760)
Other:
Net increase in loans	(153,963)	(136,778)
Proceeds from Federal Home Loan Bank stock redemption	93	2,252
Purchases of Federal Reserve Bank and Federal Home Loan Bank stock	0	(26)
Proceeds from settlement of bank owned life insurance	913	357
Purchases of premises and equipment, net	(1,312)	(901)
Proceeds from sales of other real estate owned	378	140
Net cash used in investing activities	(382,947)	(174,356)
Financing activities
Net increase in deposits	227,154	734,238
Net decrease in short-term borrowings	(32,773)	(73,048)
Repayments of long-term debt	(24)	(25,027)
Proceeds from the issuance of shares to employee and other stock plans	0	112
Cash paid by employer for tax-withholding on stock issuance	(1,210)	(1,125)
Purchase of treasury stock	(8,152)	(9,020)
Cash dividends	(12,083)	(11,732)
Net cash provided by financing activities	172,912	614,398
Net (decrease) increase in cash and cash equivalents	(174,891)	482,344
Cash and cash equivalents at beginning of period	1,269,071	672,681
Cash and cash equivalents at end of period	1,094,180	1,155,025
Cash paid during the period for:
Interest expense	5,238	7,105
Income taxes paid, net of refund	$ 2,448	$ 2,540