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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, 2018	Dec. 31, 2017	Dec. 31, 2016
Financial Assets at Fair Value Option		$ 13,800	$ 14,300
Net loss from fair value adjustments		(4,122)	(3,465)	$ (3,434)
Collateralized Mortgage Backed Securities [Member]
Financial Assets at Fair Value Option		967	1,590
Net loss from fair value adjustments		(19)	(26)	(25)
Other Securities [Member]
Financial Assets at Fair Value Option		12,843	12,685
Net loss from fair value adjustments		(109)	134	(38)
Junior Subordinated Debentures [Member]
Financial Assets at Fair Value Option		41,849	36,986
Net loss from fair value adjustments		(4,913)	(2,993)	(4,908)
Financial Assets and Liabilities, Excluding Interest Rate Caps / Swaps [Member]
Net loss from fair value adjustments	[1]	$ (5,041)	$ (2,885)	$ (4,971)
[1] The net loss from fair value adjustments presented in the above table does not include net gains (losses) of $0.9 million, ($0.6) million and $1.5 million from the change in fair value of derivative instruments during the years ended December 31, 2018, 2017 and 2016, 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://fasb.org/us-gaap/role/ref/legacyRef
-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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