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Property, Plant, and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Property, Plant and Equipment [Abstract]        
Tangible Asset Impairment Charges $ 17 $ 11,995 $ 12,012 $ 0
Operating Lease, Impairment Loss $ 1,161 $ 16,826 $ 17,986 $ 0