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Commitments, Contingencies and Other (Details Textual)	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 AUD facility bed	Sep. 30, 2016 USD ($) facility bed
Commitments and Contingencies (Textual) [Abstract]
Estimated construction capital project cost	$ 108,700,000
Cost already spent on existing capital projects	14,000,000
Remaining capital required for capital projects	94,700,000
Number of vacant beds at idle facilities marketed to potential customers | bed		3,300	3,300
Number of marketed idle facilities | facility		4	4
Estimate of possible non-income tax assessment plus interest	$ 14,800,000
Property and Equipment
Commitments and Contingencies (Textual) [Abstract]
Carrying values of idle facilities marketed to potential customers			$ 34,200,000
National Australia Bank Limited | Ravenhall | Non-Recourse Debt
Commitments and Contingencies (Textual) [Abstract]
Contributions in aid of construction			84,000,000
National Australia Bank Limited | Ravenhall | Non-Recourse Debt | Construction Facility
Commitments and Contingencies (Textual) [Abstract]
Maximum borrowing capacity		AUD 791,000,000	$ 603,900,000.0

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Carrying Values of Idle Facilities Marketed to Potential Customers

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Commitments And Contingencies.

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Cost already spent on existing capital projects.

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Estimated construction capital project cost.

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Number of Marketed Idle Facilities

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Number of Vacant Beds at Idle Facilities Marketed to Potential Customers

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Remaining capital required for capital projects.

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Developers, builders, governmental agencies and municipalities will provide the entity with cash, or in some cases property, to extend its services to their properties. Nonrefundable contributions are recorded as contributions in aid of construction ("CIAC").

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Estimated amount of loss resulting from an adverse tax position.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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