Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share For Out of Money Potential Common Shares (Parenthetical) (Detail) (USD $)			3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2014	May 10, 2012	Jun. 30, 2014 Stock Options With an Exercise Price Of $2.73 per share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price Of $2.73 per share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price Of $2.74 per share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price Of $2.74 per share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price Of $2.89 per share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price Of $2.89 per share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.25 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.25 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.30 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.30 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.40 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.40 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.40 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.40 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.43 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.43 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.43 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.43 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.50 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.50 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.50 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.50 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.51 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.51 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.51 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.51 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.53 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.53 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.53 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.53 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.90 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.90 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $3.90 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $3.90 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $4.00 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $4.00 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $4.00 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $4.00 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of 5.00 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of 5.00 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of 5.00 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of 5.00 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $7.00 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $7.00 Per Share [Member]	Jun. 30, 2014 Stock Options With an Exercise Price of $7.00 Per Share [Member]	Jun. 30, 2013 Stock Options With an Exercise Price of $7.00 Per Share [Member]	Jun. 30, 2014 Warrants With an Exercise Price of $2.44 Per Share [Member]	Jun. 30, 2014 Warrants With an Exercise Price of $3.60 Per Share [Member]	Jun. 30, 2013 Warrants With an Exercise Price of $3.60 Per Share [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options exercise price per share			$ 2.73	$ 2.73	$ 2.74	$ 2.74	$ 2.89	$ 2.89	$ 3.25	$ 3.25	$ 3.30	$ 3.30	$ 3.40	$ 3.40	$ 3.40	$ 3.40	$ 3.43	$ 3.43	$ 3.43	$ 3.43	$ 3.50	$ 3.50	$ 3.50	$ 3.50	$ 3.51	$ 3.51	$ 3.51	$ 3.51	$ 3.53	$ 3.53	$ 3.53	$ 3.53	$ 3.90	$ 3.90	$ 3.90	$ 3.90	$ 4.00	$ 4.00	$ 4.00	$ 4.00	$ 5.00	$ 5.00	$ 5.00	$ 5.00	$ 7.00	$ 7.00	$ 7.00	$ 7.00
Warrants exercise price per share	$ 4.32	$ 3.60																																															$ 2.44	$ 3.60	$ 3.60