Note 6 - Non-accrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Commercial Real Estate Portfolio Segment [Member]
Non-accrual loans	$ 13,303	$ 5,913
Construction and Land Development Portfolio Segment [Member]
Non-accrual loans	60	117
Commercial Portfolio Segment [Member]
Non-accrual loans	3,154	3,156
Owner Occupied Real Estate [Member]
Non-accrual loans	1,582	2,894
Consumer Portfolio Segment [Member]
Non-accrual loans	743	542
Residential Portfolio Segment [Member]
Non-accrual loans
Non-accrual loans	$ 18,842	$ 12,622