Note 10 - Leases - Lease Cost (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Operating lease costs	$ 325
Short-term lease costs	108
Total lease costs, included in SG&A	433
Operating cash-flows from operating leases	$ 292
Weighted-average remaining lease term (in years) (Year)	3 years
Weighted average discount rate - operating leases	5.74%