Note 21 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Net operating losses (1)	[1]	$ 20,947	$ 22,137
Tax credit carryforwards (2)	[2]	6,064	6,064
Capital loss carryforwards		2,270	4,648
Related party deferred losses		619	619
Charitable contribution carryforwards		23	23
Valuation allowance		(45,413)	(54,155)
Total deferred tax assets		13,375	15,175
Deferred tax liabilities		(12,768)	(12,739)
Net deferred tax assets		607	2,436
Domestic Tax Authority [Member]
Deferred tax assets:
Tax/GAAP basis differences		$ 28,865	$ 35,839

[1] Expiration dates ranging from 2021 to 2032.

[2] Expiration dates ranging from 2027 to 2035 and includes alternative minimum tax credit carryovers of $3.5 million that do not expire.