Quarterly report pursuant to Section 13 or 15(d)

Equipment Acquisitions and Dispositions (Details)

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Equipment Acquisitions and Dispositions (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Property, Plant and Equipment [Line Items]    
Payments to acquire property, plant and equipment $ 6,377 $ 5,649
Sales Price of Equipment 100  
Gain (Loss) on Disposition of Property Plant Equipment 100  
Gains on Asset Dispositions, Net    
Property, Plant and Equipment [Line Items]    
Amortization of Deferred Gains on Sale of Property $ 300