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Summary of Segment and Weighted Average Useful Life of Intangible Assets (Detail)	12 Months Ended
	Dec. 31, 2020
Customer Relationships | Directional Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years), Intangible assets	3 years
Customer Relationships | Other Operations
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years), Intangible assets	7 years
Developed Technology | Directional Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years), Intangible assets	5 years 10 months 20 days
Internal Use Software | Directional Drilling
Acquired Finite Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years), Intangible assets	5 years

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+ References

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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