Note 16 - Stockholders' Equity (Details) - Accumulated Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Beginning balance, loss, net of tax
Securities available-for-sale	$ (5,431)	$ (3,172)
Cash flow hedge derivatives	(2,995)	(2,397)
Total	(8,426)	(5,569)
Net unrealized gains/(losses) arising during the period
Securities available-for-sale	10,354	6,499
Cash flow hedge derivatives	(3,120)	(1,588)
Reclassification adjustment for net losses in net income
Securities available-for-sale	(119)	(12)
Total other comprehensive income/(loss)
Total	7,353	4,923
Ending balance, gain/(loss), net of tax
Securities available-for-sale	5,042	3,339
Cash flow hedge derivatives	(6,115)	(3,985)
Total	(1,073)	(646)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Net unrealized gains/(losses) arising during the period
Securities available-for-sale	17,863	11,213
Securities available-for-sale	7,509	4,714
Securities available-for-sale	10,354	6,499
Reclassification adjustment for net losses in net income
Securities available-for-sale	206	21
Securities available-for-sale	87	9
Securities available-for-sale	119	12
Total other comprehensive income/(loss)
Securities available-for-sale	18,069	11,234
Securities available-for-sale	7,596	4,723
Securities available-for-sale	10,473	6,511
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Net unrealized gains/(losses) arising during the period
Cash flow hedge derivatives	(5,383)	(2,740)
Cash flow hedge derivatives	(2,263)	(1,152)
Cash flow hedge derivatives	(3,120)	(1,588)
Total	12,480	8,473
Total	5,246	3,562
Total	7,234	4,911
Reclassification adjustment for net losses in net income
Total	206	21
Total	87	9
Total	119	12
Total other comprehensive income/(loss)
Cash flow hedge derivatives	(5,383)	(2,740)
Cash flow hedge derivatives	(2,263)	(1,152)
Cash flow hedge derivatives	(3,120)	(1,588)
Total	12,686	8,494
Total	5,333	3,571
Total	$ 7,353	$ 4,923