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Commitments and Contingencies - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended
Jun. 23, 2014
Dec. 31, 2013
Sep. 30, 2014
Jun. 30, 2014
Sep. 30, 2014
September Fifteenth Two Thousand Eight [Member]
Sep. 30, 2014
September Eighteenth Two Thousand Eight [Member]
Jul. 08, 2014
Subsequent Event [Member]
Jul. 08, 2014
Subsequent Event [Member]
Unrestricted Shares [Member]
Jul. 17, 2014
Subsequent Event [Member]
Unrestricted Shares [Member]
Sep. 30, 2014
Secured Promissory Note [Member]
Loss Contingencies [Line Items]                    
Lawsuit filing date         September 15, 2008 September 18, 2008        
Settlements on legal matters, common stock   $ 5,000,000           $ 5,000,000    
Settlements on legal matters, promissory notes   5,000,000         5,000,000      
Secured note interest rate percentage                   5.00%
Secured note maturity period                   30 months
Amount for share price fluctuation related to litigation settlement 725,000                  
Probable relief in additional cash payment 725,000                  
Asserted claims not accrued in financial 725,000                  
Settlement funded by insurers for the Company   1,700,000                
Number of common stock for distribution to class members                 2,407,318  
Accrual of payment in current liabilities   4,326,000 7,000 4,300,000            
Settlements on legal matters, cash   5,000,000                
Cash portion of the settlements, paid   $ 4,300,000         $ 4,300,000