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Property and Equipment - Additional information (Detail) $ in Millions	3 Months Ended
	Sep. 30, 2019 USD ($) Bed	Mar. 31, 2019 Bed	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Assets held for sale | $	$ 22.9		$ 17.0
Residential Treatment Centers [Member] | Albuquerque, New Mexico [Member]
Property, Plant and Equipment [Line Items]
Number of beds in facilities closed		168
Residential Treatment Centers [Member] | Butte, Montana [Member]
Property, Plant and Equipment [Line Items]
Number of beds in facilities closed	108

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Number of beds in facilities closed.

+ References

No definition available.

+ Details

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- Definition

Amount of assets held-for-sale that are not part of a disposal group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 15
-Paragraph 4
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=77912953&loc=d3e400-110220

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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

No definition available.

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