Note 5 - Loans Acquired (Details) - Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods [Abstract]
Impact on net interest income		$ 19,995	$ 26,400
Non-interest income (1)	[1]	(7,719)	(20,540)
Net impact to pre-tax income		12,276	5,860
Net impact, net of taxes		$ 7,461	$ 3,561

[1] Negative non-interest income resulted from the amortization of the FDIC indemnification assets. Because the Company's loss share agreements with the FDIC have been terminated, there will be no further indemnification asset amortization.