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Commitments and Contingencies - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Commitments and Contingencies Disclosure [Line Items]  
Common stock warrant exercisable outstanding, shares 1.9
Financial Advisor
 
Commitments and Contingencies Disclosure [Line Items]  
Common stock warrant exercisable outstanding, shares 1.9
Amount of warrants issued in Unit Offering $ 380,000
Percentage of fee assumed on exercise of warrants in unit offering 100.00%
Pennsylvania State
 
Commitments and Contingencies Disclosure [Line Items]  
Number of lawsuits filed 200
New Jersey State
 
Commitments and Contingencies Disclosure [Line Items]  
Number of lawsuits filed 150
Number of lawsuits served 50
California State
 
Commitments and Contingencies Disclosure [Line Items]  
Number of plaintiffs served in a single complaint 400
Palatine Lllinois
 
Commitments and Contingencies Disclosure [Line Items]  
Leases administrative office space $ 25,000
Lease expiring date Lease expiring March 31, 2014