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Accounts Receivable - Additional Information (Detail) $ in Thousands | 6 Months Ended
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Jun. 30, 2017 USD ($)
Accounts Notes And Loans Receivable [Line Items] |
Percentage of outstanding patient accounts receivables to be reserved as per Company's policy | 100.00%
Account receivable outstanding, number of months | 3 months
Decrease in allowance for doubtful accounts | $ (11,138)
Government-based Programs, Medicare and Medicaid | Accounts Receivable |
Accounts Notes And Loans Receivable [Line Items] |
Percentage of outstanding patient accounts receivables to be reserved as per Company's policy | 80.00%
Health Care Patient | Accounts Receivable |
Accounts Notes And Loans Receivable [Line Items] |
Percentage of accounts receivable due | 1.00%
DMG |
Accounts Notes And Loans Receivable [Line Items] |
Percentage of outstanding patient accounts receivables to be reserved as per Company's policy | 100.00%
Account receivable outstanding, number of months | 12 months

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