Note 14 - Capitalized Interest - Components of Interest Expense and Capitalized Interest (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Interest cost incurred	$ 121	$ 120
Interest cost capitalized - property and equipment and other intangible assets	(7)	(4)
Interest expense, net	$ 114	$ 116

Amount of the cost of borrowed funds accounted for as interest expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration