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Other Long-term Liabilities
 12 Months Ended
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]  
Other Liabilities Disclosure [Text Block] Other Long-term Liabilities
Other long-term liabilities consist of the following components (dollars in thousands):
December 31,
2020		December 31,
2019
Non-current asbestos-related liabilities$26,170 $6,200 
Other long-term liabilities43,520 34,610 
Total other long-term liabilities$69,690 $40,810