Note 12 - Lease Commitments - Lease Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lease Cost
Operating lease cost	$ 322
Short-term lease cost	190
Variable lease cost	155
Total lease cost	667
Cash paid for amounts included in the measurement of lease liabilities	263
Operating lease liabilities arising from obtaining right-of-use assets
Weighted average remaining lease term (Year)	12 years 299 days
Weighted average discount rate	7.82%