Closing of Merger and Financing Transaction - Additional Information (Detail) (USD $)	9 Months Ended				0 Months Ended		9 Months Ended		0 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 06, 2013	Sep. 17, 2013 Series B Convertible Preferred Stock [Member]	Sep. 03, 2013 Series B Convertible Preferred Stock [Member]	Sep. 30, 2014 Ending On Eighteen Month Anniversary [Member]	Sep. 30, 2014 Ending On Two Year Anniversary [Member]	Sep. 03, 2013 Merger Agreement [Member]	Jul. 31, 2013 Merger Agreement [Member] Bridge Notes [Member]	Sep. 03, 2013 Private Placement [Member] Series B Convertible Preferred Stock [Member]
Business Acquisition [Line Items]
Exchange ratio									1.1533
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001	$ 0.001						$ 0.001
Business Acquisition, Share Price									$ 1.08
Shares issued as Merger consideration									21,109,949
Cash payment in Merger									$ 293,000
Debt instrument, face amount										2,000,000
Stated interest per annum										8.00%
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01	$ 0.01		$ 0.01					$ 0.01
Shares to be purchased	0		0			7,544,704.4
Number of common stock shares issuable for preferred stock						2
Share Price						$ 4.00
Shares issued and sold					25,000
Gross proceeds from Securities Purchase Agreement					100,000
Percentage of stock acquired	93.00%
Percentage of covered securities							50.00%	75.00%
Merger agreement, Description	The Lock-up and Voting Agreements provide that such persons may sell, transfer or convey: (i) up to 50% of their respective Covered Securities during the period commencing on the one-year anniversary of the Closing Date and ending on the eighteen-month anniversary of the Closing Date; and (ii) up to an aggregate of 75% of their respective Covered Securities during the period commencing on the eighteen-month anniversary of the Closing Date and ending on the two-year anniversary of the Closing Date.
Goodwill	93,842,000		93,842,000						93,842,000
Intangible assets	$ 2,366,000		$ 2,741,000						$ 10,000
Amortization period									5 years