Note 18 - Fair Value of Financial Instruments - Assets and Liabilities Carried at Fair Value on a Recurring Basis, Classified Within Level 3 of the Valuation Hierarchy (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Trust Preferred Securities [Member]
Beginning balance		$ 1,110	$ 7,361
Security call			(6,300)
Net gain from fair value adjustment of financial assets	[1]	145	134
Net loss from fair value adjustment of financial liabilities	[1]
Increase(Decrease) in accrued interest		1	(87)
Change in unrealized losses included in other comprehensive loss			2
Ending balance		1,256	1,110
Changes in unrealized held at period end
Junior Subordinated Debentures [Member]
Beginning balance		36,986	33,959
Security call
Net gain from fair value adjustment of financial assets	[1]
Net loss from fair value adjustment of financial liabilities	[1]	4,913	2,993
Increase(Decrease) in accrued interest		66	34
Change in unrealized losses included in other comprehensive loss		(116)
Ending balance		41,849	36,986
Changes in unrealized held at period end

[1] These totals in the table above are presented in the Consolidated Statement of Income under net loss from fair value adjustments.