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Discontinued Operations, Exit Activities, and Clinic Obligations (Summary of Accrued) (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
USD ($)
Discontinued Operations, Exit Activities, and Clinic Obligations [Abstract]  
Accrued Balance $ 1,129
Adjustments recorded during the period 192 [1]
Payments during the period (1,020)
Accrued Balance $ 301
[1] The adjustments to the accrual recorded in 2016 relate primarily to agreements reached with franchisees related to lease obligations for previously owned MWCC Corporate Centers.