Note 9 - Securities Sold Under Agreements to Repurchase and Other Long-term Borrowings (Details) - Long-term Borrowings - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Long-term Borrowings [Abstract]
Federal Home Loan Bank advances	$ 18,806	$ 18,961
Federal Home Loan Bank advances	3.98%	3.99%
Subordinated notes payable	$ 48,970	$ 48,970
Subordinated notes payable	1.94%	1.71%
Securities sold under agreements to repurchase	$ 101,474	$ 100,763
Securities sold under agreements to repurchase	3.90%	3.92%
Total long-term borrowings	$ 169,250	$ 168,694
Total long-term borrowings	3.34%	3.29%