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Subsequent Events (Details) (USD $) In Millions, except Share data, unless otherwise specified | 9 Months Ended
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Jun. 30, 2012 Units
Subsequent Events [Abstract] |
Date of selling units in registered offering | August 13, 2012
Units sold in registered offering to institutional and individual investors | 2,300,000
Selling price per unit sold in registered offering | 2.76
Unit sold, description | Each unit consisted on one share of Arrowhead Common Stock and a warrant
Number of shares that can be purchased by a warrant | 0.75
Common stock exercisable price | $ 3.25
Gross proceeds from registered offerings | $ 6.2
Net proceeds from registered offerings after deducting commissions and fees | $ 5.8

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- Definition Common stock exercisable price. + References No definition available. + Details
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- Definition Date of selling units in registered offering. + References No definition available. + Details
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- Definition Proceeds from registered offerings. + References No definition available. + Details
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- Definition Proceeds from registered offerings after deducting commissions and fees. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Selling price per unit sold. + References No definition available. + Details
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- Definition Description of unit sold. + References No definition available. + Details
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- Definition Units sold in registered offering to investors. + References No definition available. + 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 2 -Article 4 + Details
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- Details
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