Note 17 - Regulatory Matters (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 03, 2016	Mar. 31, 2016	Jan. 01, 2019	Dec. 31, 2015	Jun. 19, 2015
Scenario, Forecast [Member]
Common Equity to Risk Weighted Assets			7.00%
Tier One Risk Based Capital to Risk Weighted Assets			8.50%
Capital to Risk Weighted Assets			10.50%
2015 Share Repurchase Program [Member]
Treasury Stock, Shares, Acquired		5,114
Stock Repurchase Program, Authorized Amount					$ 2,000
Capital Conservation Buffer		2.50%
Capital Conservation Buffer, Annual Phase-in		0.625%
Common Equity to Risk Weighted Assets				4.50%
Tier One Risk Based Capital to Risk Weighted Assets				6.00%
Capital to Risk Weighted Assets				8.00%
Tier One Leverage Capital to Average Assets		4.00%
Treasury Stock, Shares, Acquired	448,068
Treasury Stock Acquired, Average Cost Per Share	$ 8.05
Treasury Stock, Value, Acquired, Cost Method	$ 3,600	$ 3,672