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Fair Value Measurements - Measured on Nonrecurring Basis (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
$ / hp
Y
Dec. 31, 2019
USD ($)
Valuation of our interest rate swaps and impaired assets      
Goodwill impairment $ 99,800 $ 99,830  
Level 3 | Impaired Long-Lived Assets | Land and buildings | Measurement Input, Sales trends period      
Valuation of our interest rate swaps and impaired assets      
Measurement input | Y   3  
Level 3 | Impaired Long-Lived Assets | Land and buildings | Measurement Input, Sale proceeds | Minimum      
Valuation of our interest rate swaps and impaired assets      
Measurement input   100  
Level 3 | Impaired Long-Lived Assets | Land and buildings | Measurement Input, Sale proceeds | Maximum      
Valuation of our interest rate swaps and impaired assets      
Measurement input   600  
Level 3 | Impaired Long-Lived Assets | Land and buildings | Measurement Input, Sale proceeds | Weighted average      
Valuation of our interest rate swaps and impaired assets      
Measurement input   427  
Level 3 | Impaired Long-Lived Assets | Compressors | Measurement Input, Weighted average disposal period      
Valuation of our interest rate swaps and impaired assets      
Measurement input | Y   4  
Level 3 | Impaired Long-Lived Assets | Compressors | Measurement Input, Sale proceeds | Minimum      
Valuation of our interest rate swaps and impaired assets      
Measurement input | $ / hp   0  
Level 3 | Impaired Long-Lived Assets | Compressors | Measurement Input, Sale proceeds | Maximum      
Valuation of our interest rate swaps and impaired assets      
Measurement input | $ / hp   289  
Level 3 | Impaired Long-Lived Assets | Compressors | Measurement Input, Sale proceeds | Weighted average      
Valuation of our interest rate swaps and impaired assets      
Measurement input | $ / hp   20  
Level 3 | Impaired Long-Lived Assets | Compressors | Measurement Input, Discount for market liquidity      
Valuation of our interest rate swaps and impaired assets      
Measurement input   0.81  
Nonrecurring Basis | Level 3 | Impaired Long-Lived Assets | Land and buildings      
Valuation of our interest rate swaps and impaired assets      
Impaired assets   $ 430  
Nonrecurring Basis | Level 3 | Impaired Long-Lived Assets | Compressors      
Valuation of our interest rate swaps and impaired assets      
Impaired assets   $ 19,046 $ 5,859