Note 4 - Loans and Allowance for Credit Losses on Loans - Loans by Loan Portfolio Class (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Loans	[1]	$ 5,072,877	$ 4,169,303
Home Equity Line of Credit [Member]
Loans		199,485	138,976
Credit Card Receivable [Member]
Loans		20,767	17,087
Commercial Real Estate Portfolio Segment [Member]
Loans		2,234,907	1,806,649
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Loans		1,415,180	1,128,244
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Loans		819,727	678,405
Commercial and Industrial Portfolio Segment [Member] | Term, Excluding PPP [Member]
Loans		751,193	596,710
Commercial and Industrial Portfolio Segment [Member] | Term [Member]
Loans		751,193
Commercial and Industrial Portfolio Segment [Member] | Term [Member] | Small Business Administration (SBA), CARES Act, Paycheck Protection Program [Member]
Loans		19,469	140,734
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]
Loans		419,048	370,312
Total Commercial and Industrial Portfolio Segment [Member]
Loans		1,189,710	1,107,756
Residential Real Estate Portfolio Segment [Member]
Loans		860,574	681,713
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Loans		302,936	281,018
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Loans		557,638	400,695
Construction and Development [Member]
Loans		414,632	299,206
Consumer Portfolio Segment [Member]
Loans		138,843	104,294
Finance Leases Portfolio Segment [Member]
Loans		$ 13,959	$ 13,622

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