No Definition Available.

No definition available.

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- Definition

Represents the growth rate used to calculate terminal values for each reporting unit using a Gordon Growth methodology.

+ References

No definition available.

+ Details

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Goodwill
Long-term growth rate used to calculate terminal values for each reporting unit (as a percent)				2.00%
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	$ 28,380			$ 28,380	$ 183,914
Disposals and Impairments	(27,800)			(27,798)	(155,973)
Cumulative Translation Adjustment				(582)	439
Goodwill - Ending Balance		$ 28,380			28,380
U.S. Drilling
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance					50,149
Disposals and Impairments		(52,200)			(52,203)
Other Adjustment					2,054
International Drilling
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance					75,634
Disposals and Impairments			$ (75,600)		(75,634)
Drilling Solutions
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	11,436			11,436	11,436
Disposals and Impairments				(11,436)
Goodwill - Ending Balance		11,436			11,436
Rig Technologies
Change in the carrying amount of goodwill for various contract drilling segments and other operating segments
Goodwill - Beginning Balance	$ 16,944			16,944	46,695
Disposals and Impairments		(10,100)	$ (18,000)	(16,362)	(28,136)
Cumulative Translation Adjustment				$ (582)	439
Other Adjustment					(2,054)
Goodwill - Ending Balance		$ 16,944			$ 16,944