Note 12 - Leases - Components of Lease Expense and Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Lease Cost (leases with a total term greater than 12 months)	$ 547	$ 1,071
Short-term Lease Cost (leases with a total term of 12 months or less)	244	124
Variable Lease Cost	128	171
Total Lease Cost	919	1,366
Operating Lease - Operating Cash Flows (Fixed Payments)	559	1,051
Operating Lease - Operating Cash Flows (Liability Reduction)	438	948
New ROU Assets - Operating Leases	$ 875	$ 4,427
Weighted Average Discount Rate	4.03%	5.24%
Weighted Average Remaining Lease Term (Year)	8 years 219 days	8 years 200 days