CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net earnings	$ 40,423	$ 39,806	$ 27,402
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	4,211	4,358	4,117
Amortization	724	1,154	1,349
Deferred taxes	(1,157)	(143)	(3,056)
Premium amortization, net of discount accretion	4,919	4,368	3,988
Net realized gain on sales of securities available for sale	(172)	0	0
Gain on sale of loans	(2,435)	(5,528)	(6,834)
Provision for (reversal of) credit losses	2,150	(1,700)	13,200
Origination of loans held for sale	(73,292)	(118,500)	(161,169)
Proceeds from loans held for sale	76,700	125,441	164,829
Write-down of other real estate and repossessed assets	19	6	358
Net (gain) loss on sale of premises, equipment, other real estate owned and other assets	(925)	(23)	37
Stock based compensation	688	733	749
Gain on BOLI death benefits	0	(277)	0
Net change in accrued interest receivable and other assets	(14,446)	(8,565)	(3,908)
Net change in accrued interest payable and other liabilities	1,439	2,414	1,459
Net cash (used in) provided by operating activities	38,846	43,544	42,521
Securities available for sale:
Purchases	(51,739)	(1,223,595)	(662,046)
Proceeds from Sales	26,130	0	0
Proceeds from maturities and principal repayments	38,160	1,079,462	657,653
Securities held to maturity:
Purchases	(1,047,452)	(15,057)	0
Proceeds from maturities and principal repayments	824,150	890	3,024
Net originations of loans	(470,389)	(43,148)	(159,357)
Purchases of premises and equipment	(5,684)	(2,896)	(5,902)
Proceeds from BOLI death benefit	0	464	0
Proceeds from sale of premises, equipment, other real estate owned and other assets	1,860	1,202	860
Net cash provided by investing activities	(684,964)	(202,678)	(165,768)
Cash flows from financing activities
Net change in deposits	10,664	384,437	329,586
Net change in securities sold under agreements to repurchase	(6,930)	(1,480)	4,531
Proceeds from FHLB advances	1,135,000	160,000	390,000
Repayment of FHLB advances	(892,500)	(221,601)	(336,017)
Proceeds from line of credit	1,000	10,000	30,000
Repayment of line of credit	(6,000)	(17,000)	(18,000)
Proceeds from issuance of subordinated debt	34,436	0	10,000
Repayments of debentures	(5,093)	0	(1,000)
Purchase of treasury stock	(8,838)	0	(16,927)
Exercise of stock options	1,565	2,019	638
Cash dividends paid	(10,324)	(9,427)	(8,487)
Net cash used in financing activities	252,980	306,948	384,324
Net change in cash and cash equivalents	(393,138)	147,814	261,077
Cash and cash equivalents at beginning of period	499,605	351,791	90,714
Cash and cash equivalents at end of period	106,467	499,605	351,791
Supplemental disclosures of cash flow information
Interest paid	13,513	7,315	13,898
Income taxes paid	9,940	9,650	8,245
Supplemental schedule of noncash investing and financing activities
Cash dividends accrued	2,627	2,424	2,188
Lease right of use assets obtained in exchange for lease liabilities	337	1,085	1,737
Available for sale securities transferred to held to maturity, net of unrealized loss of $5,861 and unrealized gain of $8,860, respectively	106,157	172,292	0
Transfer of loans to other real estate owned and repossessed assets	70	509	666
Contributions from noncontrolling interest	574	0	0
Stock dividend	$ 0	$ 35,947	$ 0