Summary of Segment and Weighted Average Useful Life of Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2019
Customer Relationships | Directional Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life, Identifiable intangible assets	3 years
Customer Relationships | Other Operations
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life, Identifiable intangible assets	7 years
Developed Technology | Directional Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life, Identifiable intangible assets	5 years 2 months 19 days
Favorable Drilling Contracts | Contract Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life, Identifiable intangible assets	9 months 29 days
Internal Use Software | Directional Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life, Identifiable intangible assets	5 years