Property and Equipment, Net Schedule of Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 139,775	$ 124,152
Accumulated depreciation	(32,588)	(18,262)
Property and equipment, net	107,187	105,890
Rigs and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	115,391	100,859
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	18,977	17,923
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,893	1,893
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,197	1,869
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	673	494
Assets in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 644	$ 1,114