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Convertible Notes - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
9 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 9 Months Ended | 12 Months Ended | 1 Months Ended | 9 Months Ended | |||||||
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Dec. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2012
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Jun. 21, 2010
Amended ValueAct Note
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Dec. 29, 2011
Taja Convertible Note
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Mar. 31, 2012
Taja Convertible Note
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Mar. 19, 2012
Amended Taja Convertible Note
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Dec. 31, 2012
Amended Taja Convertible Note
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Mar. 31, 2012
Amended Taja Convertible Note
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Mar. 01, 2012
Amended Taja Convertible Note
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Mar. 01, 2012
Amended Taja Convertible Note
Maximum
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Mar. 01, 2012
Amended Taja Convertible Note
Minimum
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Dec. 31, 2012
Coverage Warrant
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Dec. 31, 2012
Incentive Warrant
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Dec. 31, 2012
Conversion Warrants
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| Non Cash Convertible Debt Related Expense [Line Items] | |||||||||||||||
| Principal amount of note | $ 3,500 | $ 500 | $ 1,213 | $ 3,000 | |||||||||||
| Principal amount of note, stripped out | 3,000 | ||||||||||||||
| Accrued interest | 562 | ||||||||||||||
| Total amount of debt | 1,062 | ||||||||||||||
| Warrant issued as consideration for amending the note | 2,000 | ||||||||||||||
| Warrant, exercise price per share | 0.70 | 0.25 | |||||||||||||
| Percentage of warrant coverage | 25.00% | ||||||||||||||
| Warrant Term | 5 years | ||||||||||||||
| Warrant vesting period from issue date | 1 year | ||||||||||||||
| Gain (loss) on extinguishment of debt | 1,079 | 1,459 | 1,346 | ||||||||||||
| Conversion price | $ 0.70 | $ 0.70 | |||||||||||||
| Conversion of the note, ownership percentage by holder | 4.90% | ||||||||||||||
| Net proceeds | 7,000 | 10,000 | |||||||||||||
| Fair value of embedded conversion feature of convertible note | 2,250 | ||||||||||||||
| Expected Life | 1 year | 5 years | |||||||||||||
| Risk free interest rate | 0.17% | 0.84% | |||||||||||||
| Dividend yield | 0.00% | 0.00% | |||||||||||||
| Volatility | 175.00% | 175.00% | |||||||||||||
| Fair value of convertible note warrant | 750 | 1,459 | |||||||||||||
| Excess face value charge as interest expense | 837 | ||||||||||||||
| Shares of common stock issued up on conversion | 2,600 | ||||||||||||||
| Convertible note, amount converted | 1,820 | ||||||||||||||
| Interest expense of related to the amortization of the debt discount | 1,070 | 686 | 443 | ||||||||||||
| Discount on notes | 198 | 0 | 684 | ||||||||||||
| Shares of common stock, issuable up on conversion | 1,733,376 | ||||||||||||||
| Amount by which if-converted value exceeds the principal | $ 86 | ||||||||||||||
| X | ||||||||||
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- Definition
Common Stock Warrants, Term No definition available.
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| X | ||||||||||
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- Definition
Debt Coverage Ratio No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Percentage Of Ownership Interests No definition available.
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| X | ||||||||||
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- Definition
Stock Warrant Vesting Period No definition available.
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| X | ||||||||||
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- Definition
Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The exercise price of each class of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Fair value of convertible debt at the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of warrants issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Interest expense related to convertible debt instruments which has been recognized for the period, including the contractual interest coupon and amortization of the debt discount, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Decrease for amounts of indebtedness forgiven by the holder of the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents warrants not settleable in cash classified as equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Shares issuable for little or no cash consideration upon the satisfaction of certain conditions (contingently issuable shares) are considered outstanding common shares and included in the computation of basic Earnings Per Share as of the date that all necessary conditions have been satisfied (in essence, when issuance of the shares is no longer contingent). Outstanding common shares that are contingently returnable (that is, subject to recall) are treated in the same manner as contingently issuable shares. Contingently issuable shares include shares that (a) will be issued in the future upon the satisfaction of specified conditions, (b) have been placed in escrow and all or part must be returned if specified conditions are not met, or (c) have been issued but the holder must return all or part if specified conditions are not met. The number of contingently issuable shares is determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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