Note 15 - Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Balance	$ 109,770	$ 87,500	$ 77,884
Balance	130,235	109,770	87,500
AOCI Attributable to Parent [Member]
Balance	(2,289)	(4,583)	(4,049)
Other comprehensive income (loss) before reclassifications	(1,611)	2,294	(534)
Amounts reclassified from accumulated other comprehensive loss
Balance	$ (3,900)	$ (2,289)	$ (4,583)