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Segment Reporting - Additional Information (Detail)
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9 Months Ended |
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Sep. 30, 2012
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| Segment Reporting Information [Line Items] | |
| Number of facilities owned and managed | 47 |
| Number of facilities managed and not owned | 20 |
| Number of reporting segments | 2 |
| X | ||||||||||
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- Definition
Number Of facilities managed and not owned by company. No definition available.
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| X | ||||||||||
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- Definition
Number of facilities owned and managed. No definition available.
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| X | ||||||||||
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- Definition
Number of reporting segments. No definition available.
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| X | ||||||||||
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- Details
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