Note 1 - Basis of Presentation (Details) - USD ($)		3 Months Ended			9 Months Ended
		Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Disclosure Text Block [Abstract]
FDIC Indemnification Asset, Cash Payments Received					$ 2,368,000
Gain (Loss) on Contract Termination					$ (7,476,000)
Earnings Per Share, Diluted, Year-to-Date Roll-forward Amount			$ 0.74
Earnings Per Share, Diluted	[1]	$ 0.72		$ 0.52	$ 1.83	$ 1.39

[1] EPS are computed independently for each quarter and therefore the sum of each quarterly EPS may not equal the year-to-date EPS. As a result of the large stock issuances during 2015 as part of the Company's acquisitions, the computed independent quarterly average common shares outstanding and the computed year-to-date average common shares differ significantly. For purposes of calculating a roll-forward amount for year-to-date EPS, diluted EPS for the second quarter would require a computed amount of $0.74, producing a difference of $.02 from actual third quarter diluted EPS of $0.72. This difference is based on the direct result of the varying denominator for each period presented.