Summary of Significant Accounting Policies and Other Items - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Property and equipment
Gross property and equipment	$ 270,784	$ 225,907
Less: Accumulated depreciation	(123,397)	(96,412)
Net property and equipment	147,387	129,495
Total property and equipment, net	161,748	142,054
Land
Property and equipment
Gross property and equipment	$ 3,203	3,614
Buildings \| Minimum
Property and Equipment
Estimated useful life (in years)	10 years
Buildings \| Maximum
Property and Equipment
Estimated useful life (in years)	30 years
Buildings and improvements
Property and equipment
Gross property and equipment	$ 21,655	20,803
Machinery and equipment
Property and equipment
Gross property and equipment	$ 55,494	47,606
Machinery and equipment \| Minimum
Property and Equipment
Estimated useful life (in years)	2 years
Machinery and equipment \| Maximum
Property and Equipment
Estimated useful life (in years)	12 years
Vehicles under finance lease
Property and equipment
Gross property and equipment	$ 24,275	25,165
Finance lease right-of-use asset
Property and Equipment
Estimated useful life (in years)	3 years
Rental equipment
Property and equipment
Gross property and equipment	$ 161,156	124,002
Rental equipment \| Minimum
Property and Equipment
Estimated useful life (in years)	2 years
Rental equipment \| Maximum
Property and Equipment
Estimated useful life (in years)	8 years
Furniture and fixtures
Property and Equipment
Estimated useful life (in years)	5 years
Property and equipment
Gross property and equipment	$ 1,684	1,623
Computers and software
Property and equipment
Gross property and equipment	$ 3,317	3,094
Computers and software \| Maximum
Property and Equipment
Estimated useful life (in years)	4 years
Construction in progress
Property and equipment
Gross property and equipment	$ 14,361	$ 12,559

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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