Note 6 - Securities (Details) - Available-for-sale Debt Securities by Contractual Maturity $ in Thousands	Jun. 30, 2015 USD ($)
Amounts maturing in:
One year or less	$ 0
One year or less	0
After one year through five years	13,072
After one year through five years	13,131
After five years through ten years	66,931
After five years through ten years	66,835
After ten years	2,707
After ten years	2,657
Total	225,106
Total	225,581
Collateralized Mortgage Obligations [Member]
Amounts maturing in:
Securities without a single maturity, amortized cost	109,067
Securities without a single maturity, fair value	109,187
Residential Mortgage Backed Securities [Member]
Amounts maturing in:
Securities without a single maturity, amortized cost	33,329
Securities without a single maturity, fair value	$ 33,771