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Subsequent events (Details Textual) (USD $)
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1 Months Ended | ||
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Jan. 31, 2013
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Mar. 15, 2013
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Mar. 14, 2013
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Series A Warrants [Member]
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| Subsequent events (Textuals) [Abstract] | |||
| Number of common stock | 520,776 | 520,776 | |
| Warrants exercised resulting in gross proceed | $ 599,000 | ||
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Deerfield Warrant [Member]
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| Subsequent events (Textuals) [Abstract] | |||
| Class of warrant or right exercised | 6,000,000 | ||
| Deerfield exercised reduction of our outstanding indebtedness | $ 7,500,000 |
| X | ||||||||||
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- Definition
Class of warrant or right exercised during period. No definition available.
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- Details
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- Definition
The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Decrease for amounts repaid on the debt instrument for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from holders exercising their stock warrants. No definition available.
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