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Fair Value Measurements - Schedule of Liabilities Measured at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 | Mar. 31, 2014
Warrants |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Beginning balance | $ 2,601 | $ 3,633
Warrant issuance with Senior Secured Term Loan |  | 315
Mark to market adjustment | 35 | (1,347)
Ending balance | 2,636 | 2,601
Derivative Liability |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Beginning balance |  | 529
Mark to market adjustment |  | (525)
Extinguishment of derivative liability |  | (4)
Ending balance |  | $ 0

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- Definition Fair value disclosure extinguishment of derivative liability. + References No definition available. + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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