Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

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Stockholders' Equity - Additional Information (Detail) (USD $)
1 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended
Feb. 28, 2013
Oct. 30, 2012
Oct. 29, 2012
Aug. 31, 2012
Jun. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Jun. 14, 2012
Oct. 30, 2012
Common Stock [Member]
Aug. 31, 2012
Common Stock [Member]
Aug. 31, 2011
Common Stock [Member]
Dec. 31, 2012
Common Stock [Member]
Oct. 30, 2012
Warrant [Member]
Aug. 31, 2012
Warrant [Member]
Dec. 31, 2012
Warrant [Member]
Dec. 31, 2012
Baytree [Member]
Dec. 14, 2012
Baytree [Member]
Jun. 30, 2011
Restatement Adjustment [Member]
Jun. 14, 2012
Stock Option Plan 2010 [Member]
Jun. 30, 2012
June 2012 Warrants [Member]
Dec. 31, 2012
June 2012 Warrants [Member]
Jun. 30, 2011
June 2012 Warrants [Member]
Jun. 14, 2012
Advisory Agreement [Member]
Jun. 14, 2012
Advisory Agreement [Member]
Restricted Stock
Jun. 30, 2012
Private Placement [Member]
Oct. 30, 2012
Subsequent Event [Member]
Private Placement [Member]
Stockholders Equity Note Disclosure [Line Items]                                                        
Common stock, authorized         145,000,000 145,000,000   145,000,000                                        
Preferred stock, authorized         5,000,000 5,000,000   5,000,000                                        
Preferred stock, par value         $ 0.001 $ 0.001   $ 0.001                                        
Preferred stock, issued         0 0   0                                        
Preferred stock, outstanding         0 0   0                                        
Shares of common stocks issued   100,000       241,436   2,535,093         603,594     120,719           2,813,000       100,000 1,207,185 241,437
Warrants issued           2,907,347   2,907,347                           562,551           48,287
Net proceeds from issuance of common stock and warrants   $ 4,000       $ 77,000   $ 981,000 $ 0                         $ 1,126,000            
Advisory service agreement period                                                 24 months      
Warrant to purchase restricted shares of common stock                                                 1,837,777 1,837,777    
Warrant term       5 years                                         5 years   5 years 5 years
Common stock initial exercise price   $ 0.41   $ 0.41                           $ 1.84             $ 0.41   $ 0.41  
Shares of common stock outstanding under the option plan         4,536,949 3,415,053   3,415,053                       2,097,841 1,535,500     710,000        
Accredated Investor Unit   250,000   250,000                                             500,000  
Common Stock Unit   603,592   603,594                                             1,207,185  
Warrant Units   120,718   120,719 241,437                                              
Prepaid Advisory Fees           184,000   184,000   3,258,000                                    
Amortization of prepaid advisory fees           15,000   830,000 0                 815,000                    
Warrants exercise price   $ 0.41   $ 0.41                           $ 1.84             $ 0.41   $ 0.41  
Proceeds from Issuance or Sale of Equity   77,000   231,000       672,000     241,436 603,594   1,690,063 48,287   338,013                      
Exercised 400,000   100,000         (100,000)                             2,000,000          
Stock or Unit Option Plan Expense               195,000                                        
Stock Options Expense Expected To Be Recognized               5 years 9 months 28 days                                        
Stock-based compensation           0 0 38,000 29,000                                      
Derivative Asset, Fair Value, Net     4,000     2,375,000   2,375,000                                        
Investment Options, Exercise Price $ 16,000                                                      
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized           36,000   36,000                                        
Common stock, par value         $ 0.001 $ 0.001   $ 0.001                                        
Common Stock, Value, Issued         $ 44,000 $ 47,000   $ 47,000                     $ 184,000