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Note 18 - Fair Value of Financial Instruments - Financial Assets and Liabilities Reported Under the Fair Value Option (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Assets at Fair Value Option		$ 14,300	$ 30,400
Net loss from fair value adjustments		(3,465)	(3,434)	$ (1,841)
Collateralized Mortgage Backed Securities [Member]
Financial Assets at Fair Value Option		1,590	2,016
Net loss from fair value adjustments		(26)	(25)	(59)
Other Securities [Member]
Financial Assets at Fair Value Option		12,685	28,429
Net loss from fair value adjustments		134	(38)	53
Junior Subordinated Debentures [Member]
Financial Assets at Fair Value Option		36,986	33,959
Net loss from fair value adjustments		(2,993)	(4,908)	(238)
Financial Assets and Liabilities, Excluding Interest Rate Caps / Swaps [Member]
Net loss from fair value adjustments	[1]	$ (2,885)	$ (4,971)	$ (244)
[1] The net loss from fair value adjustments presented in the above table does not include net (losses) gains of ($0.6) million, $1.5 million and ($1.6) million from the change in fair value of derivative instruments during the years ended December 31, 2017, 2016 and 2015, respectively.

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- Definition

The fair value option of financial assets.

+ References

No definition available.

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

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