Quarterly report pursuant to sections 13 or 15(d)

Convertible Notes - Additional Information (Detail)

v2.4.0.8
Convertible Notes - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Sep. 30, 2013
Sep. 30, 2013
May 31, 2013
Mar. 31, 2013
Dec. 29, 2011
Taja Convertible Note
Mar. 31, 2012
Taja Convertible Note
Mar. 19, 2012
Amended Taja Convertible Note
Mar. 31, 2012
Amended Taja Convertible Note
Mar. 01, 2012
Amended Taja Convertible Note
Mar. 01, 2012
Amended Taja Convertible Note
Maximum
Mar. 01, 2012
Amended Taja Convertible Note
Minimum
Sep. 04, 2013
Second Amended Taja Convertible and Non-Convertible Notes
Aug. 14, 2013
Second Amended Taja Convertible and Non-Convertible Notes
Mar. 31, 2012
Coverage Warrant
Mar. 31, 2012
Incentive Warrant
Mar. 31, 2012
Conversion Warrants
Aug. 14, 2013
Inducement Shares
Aug. 14, 2013
Inducement Warrants
Non Cash Convertible Debt Related Expense [Line Items]                                    
Principal amount of note, stripped out         $ 3,000                          
Principal amount of note         500                     3,000    
Accrued interest         562                          
Total amount of debt         1,062                          
Issuance of warrants related to convertible debt 476,000       400,000                       80,000 120,000
Warrant, exercise price per share     3.50   1.25                          
Percentage of warrant coverage         25.00%                          
Warrant Term         5 years               5 years          
Warrant vesting period from issue date         1 year               1 year          
Gain (loss) on extinguishment of debt (442) (442)       1,459                        
Conversion price                 $ 3.50       $ 4.00          
Conversion of the note, ownership percentage by holder                   4.90%                
Net proceeds                     10,000              
Fair value of embedded conversion feature of convertible note               2,250                    
Fair value of convertible note warrant                           750 1,459      
Excess face value charge as interest expense                         235     837    
Shares of common stock issued up on conversion 248,000           2,600,000           285,714          
Convertible note, amount converted             1,820           1,000          
Discount on Notes 762 762   159                 72          
Repayment of remaining principal and interest                       $ 1,542