Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Assets
Cash and due from banks		$ 87,922	$ 82,515
Federal funds sold and interest bearing due from banks		229,076	84,852
Total cash and cash equivalents		316,998	167,367
Mortgage loans held for sale, at fair value		6,397	2,606
Available for sale debt securities (amortized cost of $1,266,356 in 2023 and $1,297,977 in 2022, respectively)		1,131,852	1,144,617
Held to maturity debt securities (fair value of $433,900 in 2023 and $431,833 in 2022, respectively)		468,751	473,217
Federal Home Loan Bank stock, at cost		23,226	10,928
Loans	[1]	5,243,104	5,205,918
Allowance for credit losses on loans		75,673	73,531
Net loans		5,167,431	5,132,387
Premises and equipment, net		100,761	101,612
Premises held for sale		3,246	2,644
Bank owned life insurance		85,223	84,674
Accrued interest receivable		20,561	22,157
Goodwill		194,074	194,074
Other assets		125,318	134,988
Total assets		7,667,648	7,496,261
Liabilities
Non-interest bearing		1,845,302	1,950,198
Interest bearing		4,511,893	4,441,054
Total deposits		6,357,195	6,391,252
Securities sold under agreements to repurchase		104,578	133,342
Federal funds purchased		14,745	8,789
Subordinated debentures		26,442	26,343
Federal Home Loan Bank advances		275,000	50,000
Accrued interest payable		1,029	660
Other liabilities		94,291	125,443
Total liabilities		6,873,280	6,735,829
Commitments and contingent liabilities (Footnote 13)
Stockholders’ equity
Preferred stock, no par value. Authorized 1,000,000 shares; no shares issued or outstanding		0	0
Common stock, no par value. Authorized 40,000,000 shares; issued and outstanding 29,324,000 and 29,259,000 shares in 2023 and 2022, respectively		58,582	58,367
Additional paid-in capital		382,391	377,703
Retained earnings		454,338	439,898
Accumulated other comprehensive loss		(100,943)	(115,536)
Total stockholders’ equity		794,368	760,432
Total liabilities and equity		7,667,648	7,496,261
Core Deposits [Member]
Assets
Intangible		14,196	14,958
Customer Lists [Member]
Assets
Intangible		$ 9,614	$ 10,032

[1] Total loans are presented inclusive of premiums, discounts and net loan origination fees and costs.