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Supplemental Financial Information - Other Operating (Income) Expense, Net (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Supplemental Income Statement Elements [Abstract]        
Lease income $ 0 $ (329) $ 0 $ (876)
Depreciation on leased assets 0 366 0 1,551
Loss on sale or disposal of property, plant and equipment 33 3 53 276
Economic incentive grants (145) 0 (145) 0
Total other operating (income) expense, net $ (112) $ 40 $ (92) $ 951