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Note 9 - Leases - Future Maturities of Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
2020, finance leases $ 499  
2020, operating leases 1,963  
2021, finance leases 382  
2021, operating leases 1,290  
2022, finance leases 361  
2022, operating leases 984  
2023, finance leases 157  
2023, operating leases 802  
2024, finance leases 471  
2024, operating leases 814  
Thereafter, finance leases  
Thereafter, operating leases 3,664  
Total lease payments, finance leases 1,870  
Total lease payments, operating leases 9,517  
Amount representing interest, finance leases (229)  
Amount representing interest, operating leases (1,628)  
Present value of lease liabilities, finance leases 1,641  
Accrued Liabilities and Other Long-term Liabilities [Member]    
Present value of lease liabilities, finance leases 1,641  
Present value of lease liabilities, operating leases 7,889  
Accrued Liability [Member]    
Current portion of lease liabilities, included in Accrued liabilities, finance leases (420) $ (416)
Current portion of lease liabilities, included in Accrued liabilities, operating leases (1,642)
Other Noncurrent Liabilities [Member]    
Lease liabilities, less current portion, included in Other long-term liabilities, finance leases 1,221  
Lease liabilities, less current portion, included in Other long-term liabilities, operating leases $ 6,247