Subsequent Event - Additional Information (Detail) $ in Millions	1 Months Ended
	Jul. 31, 2016 USD ($) ft²	Jun. 30, 2016 ft²
Subsequent Event [Line Items]
Operating lease		158,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Operating lease	172,000
Lease expiry period	2024
Optional lease extension term	5 years
Subsequent Event [Member] | Seventh Amendment To Lease Agreement [Member]
Subsequent Event [Line Items]
Operating lease	29,000
Irrevocable standby letters of credit | $	$ 1.0