| http://www.w3.org/ns/prov#value | - The decrease at September 30, 2011 was primarily due to a combination of a loss from operations of $10.6 million, partially offset by proceeds from a registered direct public offering of common stock and warrants completed in June 2011, which raised net proceeds for the Company of $5.8 million, as well as a net reduction in receivables, prepaid expenses and other current assets and noncash expense
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