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Discontinued Operations - Additional information (Detail) (USD $)
1 Months Ended 9 Months Ended
Aug. 31, 2013
Facility
Dec. 31, 2012
Facility
Sep. 30, 2013
Physician Services Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Cash proceeds from sale of business     $ 400,000
Notes receivable, received from sale of business     500,000
Loss on sale of business     $ 4,400,000
Facilities previously closed 1 1