Commitments and Contingencies - Summary of Aggregate Future Minimum Payments (Detail) $ in Thousands	Sep. 30, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Contract Research Organization Obligations, 2015 (remainder)	$ 761
Contract Research Organization Obligations, 2016	5,093
Contract Research Organization Obligations, 2017	4,434
Contract Research Organization Obligations, 2018	988
Contract Research Organization Obligations, Total	$ 11,276

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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No definition available.

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- Definition

Amount of contractual obligation due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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No definition available.

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Amount of contractual obligation due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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No definition available.

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Amount of contractual obligation due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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No definition available.

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- Definition

Amount of contractual obligation maturing in the remainder of the fiscal year following the latest fiscal year ended.

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No definition available.

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