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Note 12 - Leases - Components of Lease Expense and Other Lease Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Jan. 01, 2019
Operating Lease Cost (leases with a total term greater than 12 months) $ 609 $ 2,506  
Short-term Lease Cost (leases with a total term of 12 months or less) 305 708  
Variable Lease Cost 156 520  
Total Lease Cost 1,070 3,734  
Operating Lease - Operating Cash Flows (Fixed Payments) 587 2,472  
Operating Lease - Operating Cash Flows (Liability Reduction) 466 2,117  
New ROU Assets - Operating Leases $ 86 $ 4,554  
Weighted Average Discount Rate 5.27% 5.27% 5.04%
Weighted Average Remaining Lease Term (in years) (Year) 8 years 160 days 8 years 160 days 5 years 226 days