For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-URI https://asc.fasb.org//1943274/2147482907/825-10-50-21

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 275
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Business Segment and Significant Customer Information - Summary of Revenue by Customers (Detail) - Customer Concentration Risk - Sales	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Customer One \| Drilling Services and Managed Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	32.00%	18.00%	37.00%	20.00%
Customer Two \| Managed Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	20.00%	30.00%	24.00%	23.00%
Customer Three \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	27.00%	0.00%	21.00%	0.00%
Customer Four \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	0.00%	13.00%	0.00%	20.00%
Customer Five \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	0.00%	0.00%	0.00%	10.00%