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Long Term Debt - Schedule of Annual Principal and Interest Payments Due Under Term Loan (Detail)
$ in Thousands
Mar. 31, 2017
USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]  
2017 $ 8,734
2018 11,082
2019 10,448
2020 4,383
Total 34,647
Less interest (2,072)
Less final payment (2,700)
Total $ 29,875