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Note 3 - Loans and Allowance for Credit Losses on Loans - Loans by Loan Portfolio Class (Details) - USD ($) $ in Thousands		Sep. 30, 2023	Dec. 31, 2022
Loans	[1]	$ 5,617,084	$ 5,205,918
Home Equity Line of Credit [Member]
Loans		203,184	200,725
Credit Card Receivable [Member]
Loans		24,055	20,413
Commercial Real Estate Portfolio Segment [Member]
Loans		2,453,737	2,231,975
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Loans		1,508,615	1,397,346
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Loans		945,122	834,629
Commercial and Industrial Portfolio Segment [Member] | Term, Excluding PPP [Member]
Loans		826,201	765,163
Commercial and Industrial Portfolio Segment [Member] | Term [Member]
Loans		826,201
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Small Business Administration (SBA), CARES Act, Paycheck Protection Program [Member]
Loans		4,827	18,593
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]
Loans		419,999	465,813
Total Commercial and Industrial Portfolio Segment [Member]
Loans		1,251,027	1,249,569
Residential Real Estate Portfolio Segment [Member]
Loans		1,046,548	904,763
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Loans		350,386	313,248
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Loans		696,162	591,515
Construction and Development [Member]
Loans		480,120	445,690
Consumer Portfolio Segment [Member]
Loans		143,703	139,461
Finance Leases Portfolio Segment [Member]
Loans		$ 14,710	$ 13,322
[1] Total loans are presented inclusive of premiums, discounts and net loan origination fees and costs.

X

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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