Facility Leases - Additional Information (Detail)	3 Months Ended
Mar. 31, 2016 Option
Leases [Abstract]
Expiry of lease of Building	Mar. 31, 2018
Operating leases renewal term, duration	5 years
Operating leases options	2

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration