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 | ||||||||||
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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 |