Note 16 - Subsequent Event (Details Textual) - shares	Mar. 10, 2016	May. 06, 2016	Feb. 28, 2016
Subsequent Event [Member]
Stock Repurchase Program, Additional Number of Shares Authorized to be Repurchased	1,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	1,531,412
Stock Repurchase Program, Percentage of Shares Authorized to be Repurchased		7.60%
Shares, Outstanding		20,234,671
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased			531,412