FAIR VALUE MEASUREMENTS - Measured on Nonrecurring Basis (Details) - Level 3 $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022 USD ($) Y $ / hp	Sep. 30, 2022 USD ($) Y $ / hp	Dec. 31, 2021 USD ($) $ / hp
Impaired Long-Lived Assets | Compressors | Measurement Input, Weighted average disposal period
Fair value
Measurement input | Y	4	4
Impaired Long-Lived Assets | Compressors | Measurement Input, Sale proceeds | Minimum
Fair value
Measurement input	0	0	0
Impaired Long-Lived Assets | Compressors | Measurement Input, Sale proceeds | Maximum
Fair value
Measurement input	621	621	621
Impaired Long-Lived Assets | Compressors | Measurement Input, Sale proceeds | Weighted average
Fair value
Measurement input	44	44	35
Impaired Long-Lived Assets | Compressors | Measurement Input, Discount for market liquidity
Fair value
Measurement input	0.56	0.56	0.64
Nonrecurring Basis | Idle Compressor Units
Fair value
Impairment recorded on idle compressors retired from the active fleet | $	$ 4,100	$ 16,200
Nonrecurring Basis | Impaired Long-Lived Assets | Compressors
Fair value
Impaired assets | $	$ 1,548	$ 1,548	$ 4,380