Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities
Net income	$ 72,243	$ 65,666
Items not requiring (providing) cash
Provision for (recovery of) credit losses	(1,747)	(13)
Depreciation and amortization	8,027	6,852
Share based compensation	1,783	1,288
Amortization of mortgage servicing rights	2,018	2,960
Mortgage servicing rights net impairment	(2,942)	(2,142)
Premium amortization on securities, net	9,391	7,279
Gain on sale of investment securities	0	(914)
Gain on sale of mortgage loans	(5,969)	(14,996)
Proceeds from sales of loans	(182,218)
Proceeds from sales of loans		366,004
Loans originated for sale	198,914	(342,281)
Gain on cash value life insurance	(1,843)	(1,547)
Gain on sale of other real estate owned	(618)	(76)
Net change in:
Interest receivable	(3,959)	(2,847)
Interest payable	(274)	(1,301)
Other assets	(12,865)	8,330
Other liabilities	(2,277)	(3,443)
Net cash provided by operating activities	77,664	88,819
Investing Activities
Purchases of securities available for sale	(180,464)	(820,485)
Proceeds from sales, maturities, calls and principal repayments of securities available for sale	54,022	250,808
Purchases of securities held to maturity	(423,493)	(625,397)
Proceeds from maturities of securities held to maturity	65,720	23,368
Net change in interest earning time deposits	1,968	3,198
Purchase of FHLB stock	(2,435)	(1,417)
Redemption of FHLB stock	198	0
Net change in loans	(370,251)	410,717
Proceeds on the sale of OREO and repossessed assets	3,555	1,119
Premises and equipment expenditures	(4,701)	(462)
Purchases of bank owned life insurance	(50,000)	0
Proceeds from bank owned life insurance	2,910	0
Death benefit on bank owned life insurance	644	783
Net cash received in branch acquisition	0	616,832
Net cash used in investing activities	(902,327)	(140,936)
Financing Activities
Net change in deposits	27,847	602,357
Proceeds from borrowings	668,276	227,531
Repayment of borrowings	(350,000)	(65,040)
Net change in repurchase agreements	17,076	35,702
Net settlement of share awards	(1,785)	(1,347)
Exercise of stock options	108	769
Repurchase of outstanding stock	0	(7,607)
Dividends paid on common stock	(20,708)	(18,142)
Net cash provided by financing activities	340,814	774,223
Net Change in Cash and Cash Equivalents	(483,849)	722,106
Cash and Cash Equivalents, Beginning of Period	593,508	249,711
Cash and Cash Equivalents, End of Period	109,659	971,817
Additional Supplemental Information
Interest paid	18,384	15,448
Income taxes paid	936	1,225
Transfer of loans to other real estate and repossessed assets	1,483	964
Transfer of premises to other real estate	$ 1,479	$ 1,753