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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenue from External Customer [Line Items]
Revenue	$ 20,336	$ 18,397
Revenue related to unsatisfied performance obligations	0
Uncertain tax position	0
Sales
Revenue from External Customer [Line Items]
Revenue recognized	1,300		$ 1,100
Bill and Hold Arrangement
Revenue from External Customer [Line Items]
Revenue	$ 0	$ 0
Minimum
Revenue from External Customer [Line Items]
Amortization period of capitalized contract costs	1 year
Rental Contracts, Excluding Large Horsepower Compressors \| Minimum
Revenue from External Customer [Line Items]
Rental contract term	6 months
Rental Contracts, Excluding Large Horsepower Compressors \| Maximum
Revenue from External Customer [Line Items]
Rental contract term	24 months
Rental Contracts, Large Horsepower Compressors \| Maximum
Revenue from External Customer [Line Items]
Rental contract term	60 months