Stockholders' Equity - Summary of Warrants Issued and Outstanding (Detail)
|
12 Months Ended | 9 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2012
|
Sep. 30, 2013
|
Mar. 29, 2013
|
Sep. 30, 2013
Exercisable Warrants [Member]
|
Sep. 30, 2013
Exercisable Warrants [Member]
Warrant 1-1 [Member]
|
Sep. 30, 2013
Exercisable Warrants [Member]
Warrant 1-5 [Member]
|
Sep. 30, 2013
Exercisable Warrants [Member]
Warrant 1-6 [Member]
|
Sep. 30, 2013
Contingent Warrants [Member]
|
Sep. 30, 2013
Contingent Warrants [Member]
Warrant 1-2 [Member]
|
Sep. 30, 2013
Contingent Warrants [Member]
Warrant 1-3 [Member]
|
Sep. 30, 2013
Contingent Warrants [Member]
Warrant 1-4 [Member]
|
|
Class of Warrant or Right [Line Items] | |||||||||||
Date of Issuance | Mar. 22, 2012 | Oct. 10, 2012 | Mar. 29, 2013 | Mar. 22, 2012 | Mar. 22, 2012 | Mar. 22, 2012 | |||||
Date of Expiration | 2017-03-21 | 2017-10-09 | 2017-03-21 | 2017-03-21 | 2017-03-21 | 2017-03-21 | |||||
Exercise price of warrants | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | ||
Shares of Common Stock | 1,381,113 | (7,405,576) | 1,381,115 | 5,524,461 | 500,000 | (1,381,113) | 345,278 | 345,278 | 690,557 |