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Note 8 - Leases - Lease Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Gross $ 25,919  
Accumulated Amortization (4,068)  
Net of Accumulated Amortization 21,851 $ 0
Current Operating Lease Liabilities 4,136 0
Long-Term Operating Lease Liabilities 18,193 0
Total Lease Liabilities 22,329 $ 20,369
Electric [Member]    
Gross 4,137  
Accumulated Amortization (1,166)  
Net of Accumulated Amortization 2,971  
Current Operating Lease Liabilities 1,116  
Long-Term Operating Lease Liabilities 2,176  
Total Lease Liabilities 3,292  
Manufacturing [Member]    
Gross 20,347  
Accumulated Amortization (2,375)  
Net of Accumulated Amortization 17,972  
Current Operating Lease Liabilities 2,609  
Long-Term Operating Lease Liabilities 15,470  
Total Lease Liabilities 18,079  
Plastics [Member]    
Gross 666  
Accumulated Amortization (395)  
Net of Accumulated Amortization 271  
Current Operating Lease Liabilities 256  
Long-Term Operating Lease Liabilities 15  
Total Lease Liabilities 271  
Corporate Segment [Member]    
Gross 769  
Accumulated Amortization (132)  
Net of Accumulated Amortization 637  
Current Operating Lease Liabilities 155  
Long-Term Operating Lease Liabilities 532  
Total Lease Liabilities $ 687