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v3.19.1

Property and Equipment - Additional information (Detail) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) Bed | Dec. 31, 2018 USD ($)
Other Assets [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Assets held for sale | $ | $ 21.1 | $ 17.0
Residential Treatment Centers [Member] | Albuquerque, New Mexico [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Number of beds in facilities closed | Bed | 168 |

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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 + Details
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