Note 16 - Regulatory Capital Requirements and Restrictions on Dividends (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Aug. 27, 2015
Disclosure Text Block [Abstract]
Annual Phase-in Percentage of Capital Conservation Buffer	0.625%
Capital Required for Capital Adequacy to Risk Weighted Assets With Capital Conservation Buffer	10.50%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets With Capital Conservation Buffer	8.50%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets With Capital Conservation Buffer	7.00%
Shelf Registration, Maximum Value of Equity Authorized for Issuance (in Dollars)		$ 100.0