Note 4 - Loans, Allowance for Loan Losses and Other Real Estate Owned - Loans Receivable at Carrying Amount (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Loans	$ 1,161,712	$ 1,207,202
Commercial Portfolio Segment [Member]
Loans	243,577	275,080
Commercial Real Estate Portfolio Segment [Member]
Loans	577,665	580,480
Construction Portfolio Segment [Member]
Loans	5,482	3,982
Residential Portfolio Segment [Member]
Loans	37,813	44,866
Consumer Portfolio Segment [Member]
Loans	$ 297,175	$ 302,794