Note 12 - Leases - Components of Lease Expense and Other Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Operating Lease Cost (leases with a total term greater than 12 months)	$ 3,057
Short-term Lease Cost (leases with a total term of 12 months or less)	1,040
Variable Lease Cost	657
Total Lease Cost	4,754
Operating Lease - Operating Cash Flows (Fixed Payments)	3,130
Operating Lease - Operating Cash Flows (Liability Reduction)	2,665
New ROU Assets - Operating Leases	$ 5,392
Weighted Average Discount Rate	5.20%	5.04%
Weighted Average Remaining Lease Term (Year)	8 years 226 days	5 years 226 days