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Segments - Adjusted EBITDA Calculation by Segment (Parenthetical) (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Segment Reporting Information [Line Items]
Costs primarily associated with workforce optimization efforts	$ 37,594
Cost of Revenue [Member]
Segment Reporting Information [Line Items]
Costs primarily associated with workforce optimization efforts	7,400
Operating, Administrative, and Other [Member]
Segment Reporting Information [Line Items]
Costs primarily associated with workforce optimization efforts	$ 30,200

X

- Definition

costs primarily associated with workforce optimization efforts.

+ References

No definition available.

+ Details

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Period Type:	duration

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.

+ Details

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Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Period Type: