Note 17 - Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Balance	$ 97,219	$ 89,191
Total other comprehensive income (loss)	7,596	(2,860)
Reclassification from Accumulated Other Comprehensive Income to Retained Earnings
Balance	133,607	97,219
AOCI Attributable to Parent [Member]
Balance	(4,540)	(1,745)
Other comprehensive income (loss) before reclassifications	8,565	(2,863)
Amounts reclassified from accumulated other comprehensive income (loss)	(969)	3
Total other comprehensive income (loss)	7,596	(2,860)
Reclassification from Accumulated Other Comprehensive Income to Retained Earnings		65
Balance	$ 3,056	$ (4,540)