Note 6 - Interest Rate Swap Derivatives - Fair Values of Derivative (Details) (Parentheticals) - Other Liabilities [Member]	Mar. 31, 2017	Dec. 31, 2016
Interest Rate Swap 1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Basis points	10.00%	10.00%
Interest Rate Swap 2 [Member] | Federal Funds Effective Swap Rate [Member]
Basis points	10.00%	10.00%
Interest Rate Swap 3 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Basis points	10.00%	10.00%