Note 17 - Stockholders' Equity (Details) - Accumulated Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Beginning balance, loss, net of tax
Securities available-for sale	$ (1,125)	$ (8,896)	$ (3,172)	$ (29,729)
Cash flow hedge derivatives	(1,657)		(2,397)
Total	(2,782)	(8,896)	(5,569)	(29,729)
Net unrealized gains/(losses) arising during the period
Securities available-for sale	2,733	170	2,837	25,014
Cash flow hedge derivatives	(2,558)	100	(1,818)	(163)
Total	304	463	1,758	42,876
Total	129	193	739	18,025
Total	175	270	1,019	24,851
Reclassification adjustment for net losses/(gains) in net income
Securities available-for sale	(10)	209	(1,953)	3,957
Total	16	(361)	3,369	(6,827)
Total	6	(152)	1,416	(2,870)
Total	10	(209)	1,953	(3,957)
Total other comprehensive income/(loss)
Total	320	102	5,127	36,049
Total	135	41	2,155	15,155
Total	185	61	2,972	20,894
Ending balance, loss, net of tax
Securities available-for sale	1,618	(8,935)	1,618	(8,935)
Cash flow hedge derivatives	(4,215)	100	(4,215)	100
Total	(2,597)	(8,835)	(2,597)	(8,835)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Net unrealized gains/(losses) arising during the period
Securities available-for sale	4,717	292	4,895	43,157
Securities available-for sale	1,984	122	2,058	18,143
Securities available-for sale	2,733	170	2,837	25,014
Reclassification adjustment for net losses/(gains) in net income
Securities available-for sale	16	(361)	3,369	(6,827)
Securities available-for sale	6	(152)	1,416	(2,870)
Securities available-for sale	10	(209)	1,953	(3,957)
Total other comprehensive income/(loss)
Securities available-for sale	4,733	(69)	8,264	36,330
Securities available-for sale	1,990	(30)	3,474	15,273
Securities available-for sale	2,743	(39)	4,790	21,057
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Net unrealized gains/(losses) arising during the period
Cash flow hedge derivatives	(4,413)	171	(3,137)	(281)
Cash flow hedge derivatives	(1,855)	71	(1,319)	(118)
Cash flow hedge derivatives	(2,558)	100	(1,818)	(163)
Total other comprehensive income/(loss)
Cash flow hedge derivatives	(4,413)	171	(3,137)	(281)
Cash flow hedge derivatives	(1,855)	71	(1,319)	(118)
Cash flow hedge derivatives	$ (2,558)	$ 100	$ (1,818)	$ (163)