Note 6 - Other Borrowed Funds (Details) - Other Borrowed Funds - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other borrowed funds	$ 28,133	$ 23,946
Federal Home Loan Bank Advances [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other borrowed funds	24,215	20,028
Promissory Notes [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Other borrowed funds	$ 3,918	$ 3,918