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Summary of the Fair Value Estimates of the Identifiable Intangible Assets (Detail) - Kosmos Acquisition [Member] - Estimated Fair Value [Member] $ in Thousands	3 Months Ended
	Jun. 30, 2020 USD ($)
Business Acquisition [Line Items]
Estimated Fair Value	$ 38,300
Permits [Member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life	20 years
Estimated Fair Value	$ 1,500
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life	15 years
Estimated Fair Value	$ 35,300
Trade Name and Technology [Member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life	10 years
Estimated Fair Value	$ 1,500

X

- 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

No definition available.

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=116868840&loc=d3e2207-128464

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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