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Sale of Grapevine, Texas Property (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Sale of Grapevine, Texas Property [Abstract]      
Net proceeds from sale of Grapevine, Texas facility $ 4,801 $ 0 $ 0
Gain on sale of property, plant and equipment $ 0 $ 3,997 $ 15