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Revenue Recognition and Accounts Receivable - Summary Information for Accounts Receivable (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Sep. 30, 2015
Jun. 30, 2015
Receivables [Abstract]        
Accounts receivable (net of contractual allowances) $ 6,698 $ 7,157    
Less allowance for doubtful accounts (792) (991) $ (5,225) $ (5,347)
Patient accounts receivable - net $ 5,906 $ 6,166