Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 439,043	$ 413,127
Accumulated depreciation	(163,333)	(85,813)
Property and equipment, net	275,710	327,314
Oilfield service equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	284,943	260,396
Disposal Wells
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,863	29,633
Motor vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	44,286	43,366
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,469	5,456
Buildings and land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	65,328	66,964
Work in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,154	$ 7,312

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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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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