Related Party Transaction - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended
Apr. 01, 2014	Sep. 30, 2014	Sep. 30, 2014
Related Party Transactions [Abstract]
Initial term of lease agreement			7 years
Lease agreement expiration date			Mar. 31, 2021
Initial annual base rent	$ 480,000
Lease expense		$ 120,000	$ 240,000

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

Name:	us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration