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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
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, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Customer One \| Managed Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	30.00%	0.00%	23.00%	0.00%
Customer Two \| Drilling Services and Managed Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	18.00%	26.00%	20.00%	33.00%
Customer Three \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	13.00%	0.00%	20.00%	0.00%
Customer Four \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	0.00%	17.00%	10.00%	11.00%
Customer Five \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	0.00%	46.00%	0.00%	29.00%
Customer Six \| Drilling Services
Revenue, Major Customer [Line Items]
Percentage of revenue (excluding reimbursable revenue)	0.00%	0.00%	0.00%	16.00%