Organization and Basis of Presentation - Initial Public Offering and Related Transactions (Parenthetical) (Detail) (USD $)	12 Months Ended
Dec. 31, 2013
Equity [Abstract]
Value of warrants granted to underwriters	$ 470,000

Adjustment for noncash service expenses paid for by granting of warrants.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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