Note 16 - Stockholders' Equity (Details) - Accumulated Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Securities available-for sale	$ (3,172)	$ (29,729)
Cash flow hedge derivatives	(2,397)
Net unrealized gains/(losses) arising during the period
Securities available-for sale	6,499	11,094
Cash flow hedge derivatives	(1,588)
Reclassification adjustment for net losses/(gains) in net income
Securities available-for sale	12	(3,455)
Total other comprehensive income/(loss)
Total	4,923	7,639
Ending balance, income/(loss), net of tax
Securities available-for sale	3,339	(22,090)
Cash flow hedge derivatives	(3,985)
Total	(646)	(22,090)
Total	(5,569)	(29,729)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Net unrealized gains/(losses) arising during the period
Securities available-for sale	11,213	19,141
Securities available-for sale	4,714	8,047
Securities available-for sale	6,499	11,094
Securities available-for sale	11,213	19,141
Securities available-for sale	4,714	8,047
Reclassification adjustment for net losses/(gains) in net income
Securities available-for sale	21	(5,961)
Securities available-for sale	9	(2,506)
Securities available-for sale	12	(3,455)
Total other comprehensive income/(loss)
Securities available-for sale	11,234	13,180
Securities available-for sale	4,723	5,541
Securities available-for sale	6,511	7,639
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Net unrealized gains/(losses) arising during the period
Cash flow hedge derivatives	(2,740)
Cash flow hedge derivatives	(1,152)
Cash flow hedge derivatives	(1,588)
Total	8,473	19,141
Total	3,562	8,047
Total	4,911	11,094
Reclassification adjustment for net losses/(gains) in net income
Total	21	(5,961)
Total	9	(2,506)
Total	12	(3,455)
Total other comprehensive income/(loss)
Cash flow hedge derivatives	(2,740)
Cash flow hedge derivatives	(1,152)
Cash flow hedge derivatives	(1,588)
Total	8,494	13,180
Total	3,571	5,541
Total	$ 4,923	$ 7,639

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Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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