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Stockholders' Equity (Detail) - Schedule of warrant activity (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Dec. 31, 2011 | Dec. 31, 2011
Number of Warrants [Member] |  |  |
Number of warrants | 899,480 |  |
Exercisable at September 30, 2012 | 983,280 |  |
Granted | 155,100 | 899,480 |
Exercised | 71,300 | 0 |
Forfeited | 0 | 0 |
Expired | 0 | 0 |
Number of warrants | 983,280 | 899,480 | 899,480
Average exercise price [Member] |  |  |
Average exercise price (in Dollars per share) | $ 2.39 | $ 2.00 | $ 2.00
Exercisable at September 30, 2012 (in Dollars per share) | $ 2.39 |  |
Granted (in Dollars per share) | $ 4.50 | $ 2.00 |
Exercised (in Dollars per share) | $ 2.00 | $ 0 |
Average exercise price (in Dollars per share) | $ 2.39 | $ 2.00 | $ 2.00
Weighted Average Remaining Contractual Term [Member] |  |  |
Weighted average remaining contractual term in years | 1 year 343 days | 2 years 229 days | 2 years 229 days
Exercisable at September 30, 2012 | 1 year 343 days | 2 years 229 days | 2 years 229 days
Granted | 3 years | 2 years 321 days |
Weighted average remaining contractual term in years | 1 year 343 days | 2 years 229 days | 2 years 229 days

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