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Receivables, Net - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Loans and Leases Receivable Disclosure [Line Items]    
Estimated probable recoveries $ 38,000 $ 36,500
Allowances for doubtful accounts 286 $ 1,700
Reclassified amount [Member]    
Loans and Leases Receivable Disclosure [Line Items]    
Estimated probable recoveries $ 38,000