Customers Accounting For Ten Percent Or More Of Net Revenue

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- Definition

Number of marketable land based rigs.

+ References

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Business Segments - Additional Information (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($) Rigs	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) Rigs Segment Customer	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($) Customer
Segment Reporting Disclosure [Line Items]
Number of reportable business segments \| Segment									3
Total operating revenues	$ 492,297	$ 598,452	$ 675,765	$ 704,171	$ 795,937	$ 867,478	$ 854,418	$ 809,164	$ 2,470,685	$ 3,326,997	$ 2,356,684
Long-lived assets	$ 3,306,677				4,002,549				$ 3,306,677	$ 4,002,549
Major Customer
Segment Reporting Disclosure [Line Items]
Number of customers accounted for 10% or more of consolidated revenues \| Customer									0	0	0
Contract Drilling
Segment Reporting Disclosure [Line Items]
Marketable land-based drilling rigs \| Rigs	216								216
Total operating revenues									$ 1,308,350	$ 1,430,492	$ 1,040,033
Contract Drilling \| Canada
Segment Reporting Disclosure [Line Items]
Total operating revenues									4,700	9,300	$ 13,700
Long-lived assets	$ 20,100				$ 26,200				$ 20,100	$ 26,200