Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Activities
Net income	$ 23,563	$ 20,422
Items not requiring (providing) cash
Provision for (recovery of) credit losses	(1,386)	367
Depreciation and amortization	2,641	2,322
Share based compensation	529	362
Amortization of mortgage servicing rights	750	962
Mortgage servicing rights net impairment	(2,594)	(236)
Premium amortization on securities, net	3,068	2,224
Gain on sale of investment securities	0	(914)
Gain on sale of mortgage loans	(2,027)	(5,296)
Proceeds from sales of loans	92,161	137,060
Loans originated for sale	(81,336)	(126,024)
Change in cash value life insurance	(510)	(511)
Gain on sale of other real estate owned	(411)	0
Net change in:
Interest receivable	(1,339)	445
Interest payable	(815)	(940)
Other assets	4,730	8,284
Other liabilities	(9,969)	(5,156)
Net cash provided by operating activities	27,055	33,371
Investing Activities
Purchases of securities available for sale	(180,260)	(230,708)
Proceeds from sales, maturities, calls and principal repayments of securities available for sale	23,089	76,869
Purchases of securities held to maturity	(345,794)	0
Proceeds from maturities of securities held to maturity	13,136	6,623
Net change in interest earning time deposits	736	982
Change in FHLB stock	198	0
Net change in loans	(67,592)	199,428
Proceeds on the sale of OREO and repossessed assets	1,606	507
Premises and equipment expenditures	(1,078)	(1,118)
Net cash used in investing activities	(555,959)	52,583
Net Change In [Abstract]
Net change in deposits	48,506	190,683
Proceeds from borrowings	228,597	2,909
Repayment of borrowings	(225,000)	(107)
Net change in repurchase agreements	12,429	6,641
Net settlement of share awards	(1,671)	(1,347)
Exercise of stock options	94	653
Dividends paid on common stock	(6,605)	(5,761)
Net cash provided by financing activities	56,350	193,671
Net Change in Cash and Cash Equivalents	(472,554)	279,625
Cash and Cash Equivalents, Beginning of Period	593,508	249,711
Cash and Cash Equivalents, End of Period	120,954	529,336
Additional Supplemental Information
Interest paid	4,726	5,991
Income taxes paid	0	0
Transfer of loans to other real estate and repossessed assets	$ 100	$ 449