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Rental Equipment, Property and Equipment (Schedule of Rental Equipment, Property and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 34,716	$ 28,214
Less accumulated depreciation	(12,847)	(11,570)
Property and equipment, net	21,869	16,644
Depreciation	23,143	21,954	$ 21,191
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,290	1,290
Building
Property, Plant and Equipment [Line Items]
Useful Lives	39 years
Property and equipment, gross	$ 18,632	6,116
Building and leasehold improvements
Property, Plant and Equipment [Line Items]
Useful Lives	39 years
Property and equipment, gross	$ 1,168	808
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Property and equipment, gross	$ 2,001	1,492
Software
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Property and equipment, gross	$ 573	573
Machinery and equipment
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Property and equipment, gross	$ 3,492	3,324
Vehicles
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Property and equipment, gross	$ 7,560	6,292
Construction in Progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	0	8,319
Property, Plant, and Equipment, Excluding Rental Equipment
Property, Plant and Equipment [Line Items]
Depreciation	1,700	1,100	1,200
Rental Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	380,090	341,565
Less accumulated depreciation	(162,348)	(165,459)
Property and equipment, net	217,742	176,106
Depreciation	21,400	20,900	$ 20,000
Rental Equipment | Compressor units
Property, Plant and Equipment [Line Items]
Property and equipment, gross	370,961	329,697
Rental Equipment | Work-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,129	$ 11,868
Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Minimum | Rental Equipment
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	39 years
Maximum | Rental Equipment
Property, Plant and Equipment [Line Items]
Useful Lives	25 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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