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Fair Value Measurements (Detail) (Warrant Derivative Liaibilites [Member], USD $)
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Mar. 31, 2014
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Jun. 30, 2013
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|---|---|---|
| Fair Value Measurements [Line Items] | ||
| Warrant derivative liabilities | $ 808,000 | $ 143,000 |
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Fair Value, Inputs, Level 1
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| Fair Value Measurements [Line Items] | ||
| Warrant derivative liabilities | 0 | 0 |
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Fair Value, Inputs, Level 2
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| Fair Value Measurements [Line Items] | ||
| Warrant derivative liabilities | 0 | 0 |
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Fair Value, Inputs, Level 3
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| Fair Value Measurements [Line Items] | ||
| Warrant derivative liabilities | $ 808,000 | $ 143,000 |