Note 3 - Loans - Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021		Dec. 31, 2020
Loans and Leases Receivable, Net of Deferred Income, Total	$ 1,940,332		$ 2,015,056
Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	320,278	[1]	491,256
Commercial Real Estate Portfolio Segment [Member] | Construction and Land Development [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	120,193		140,071
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	404,029		373,680
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	713,339		627,569
Residential Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	375,668		374,018
Residential Portfolio Segment [Member] | Non-owner Occupied Commercial Real Estate [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	713,339		627,569
Residential Portfolio Segment [Member] | Residential [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	280,351		269,137
Residential Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	95,317		104,881
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Net of Deferred Income, Total	$ 6,825		$ 8,462

[1] Includes PPP loans, which are guaranteed by the SBA and have no related allowance.