Note 15 - Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balance	$ 130,235	$ 109,770	$ 87,500
Balance	148,141	130,235	109,770
AOCI Attributable to Parent [Member]
Balance	(3,900)	(2,289)	(4,583)
Other comprehensive income (loss) before reclassifications	(107)	(1,611)	2,294
Amounts reclassified from accumulated other comprehensive loss
Balance	$ (4,007)	$ (3,900)	$ (2,289)