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Short Term Debt (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Mar. 31, 2013
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Short Term Debt |  |
Short Term Debt | $ 10 | $ 3,777
Equipment Leases |  |
Short Term Debt |  |
Short Term Debt | 10 | 17
Senior Secured Convertible Note |  |
Short Term Debt |  |
Short Term Debt |  | 2,714
Secured Note |  |
Short Term Debt |  |
Short Term Debt |  | 363
Convertible Note |  |
Short Term Debt |  |
Short Term Debt |  | $ 683

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration