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Other Long-term Liabilities Other Long-term Liabilities (Tables)
 6 Months Ended
Jun. 30, 2020
Other Liabilities Disclosure [Abstract]  
Other Noncurrent Liabilities [Table Text Block]
Other long-term liabilities consist of the following components (dollars in thousands):
 
 
June 30,
2020
 
December 31,
2019
Non-current asbestos-related liabilities
 
$
27,800

 
$
6,200

Other long-term liabilities
 
30,110

 
34,610

Total other long-term liabilities
 
$
57,910

 
$
40,810