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Business Transactions - Harvest Sale (Details)
$ in Thousands
12 Months Ended
Aug. 01, 2019
USD ($)
hp
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Proceeds from sale of property, plant and equipment and other assets   $ 18,911 $ 80,961 $ 33,927
Disposed of by Sale, Not Discontinued Operations | Harvest        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Compressor units horsepower (horsepower) | hp 80,000      
Proceeds from sale of property, plant and equipment and other assets $ 30,000      
Gain on sale of assets     $ 6,600