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Summary of Significant Accounting Policies - Schedule of Minimum Future Lease Payments (Excluding Lease Termination Liability) under Non-Cancelable Operating Leases (Detail)
$ in Thousands
Jun. 30, 2017
USD ($)
Leases Operating [Abstract]  
2018 $ 8,545
2019 7,901
2020 7,630
2021 6,340
2022 3,911
Thereafter 564
Total minimum lease payments $ 34,891