Note 5 - Loans Acquired (Details) - Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Impact of the Adjustments on the Company's Financial Results for the Following Reporting Periods [Abstract]
Impact on net interest income	$ 3,223	$ 5,856	$ 9,325	$ 13,247
Non-interest income	(2,941)	(6,410)	(5,686)	(13,850)
Net impact to pre-tax income	282	(554)	3,639	(603)
Net impact, net of taxes	$ 171	$ (337)	$ 2,212	$ (366)