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Investment in Non-Consolidated Joint Venture - Summarized Balance Sheet Information for Joint Venture (Detail) - Joint Venture [Member] - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]    
Current assets $ 32,425 $ 24,663
Non-current assets 22,875 22,847
Total assets 55,300 47,510
Current liabilities 16,540 11,171
Total liabilities $ 16,540 $ 11,171