Going Concern	3 Months Ended	12 Months Ended
Jan. 31, 2014	Jul. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Going Concern	Going Concern The accompanying interim statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The Company has experienced negative cash flows from operations since inception and has an accumulated deficit of approximately $371 million and a working capital deficiency of approximately $4.9 million at January 31, 2014. The Company has funded its activities to date almost exclusively from debt and equity financings, as well as the recent sales of non-essential real estate assets in fiscal 2012, fiscal 2013 and the first half of fiscal 2014 (see Note 11). The Company will continue to require substantial funds to continue research and development, including pre-clinical studies and clinical trials of its product candidates, and to commence sales and marketing efforts, if the U.S. Food and Drug Administration or other regulatory approvals are obtained. Management’s plans in order to meet its operating cash flow requirements include financing activities such as private placements of its common stock, preferred stock offerings, issuances of debt and convertible debt instruments. Management will be limited in the financing activities that the Company undertakes in the near future as the securities purchase agreements that the Company entered into on June 17, 2013 and January 14, 2014 with certain investors prohibit the Company from (i) issuing additional equity securities until 60 days after the effective date of a registration statement covering the resale of the common stock issuable upon exercise of the warrants and conversion of the preferred stock sold in those transactions; and (ii) issuing additional debt or equity securities with variable conversion or exercise prices until June 17, 2014 and January 14, 2015, respectively. Management is also actively pursuing financial and strategic alternatives, including strategic investments and divestitures, industry collaboration activities and strategic partners. Management has sold its non-essential real estate assets which were classified as Assets Held for Investment to augment its cash position. These factors raise substantial doubt regarding the Company’s ability to continue as a going concern. There are no assurances that such additional funding will be achieved and that it will succeed in its future operations. The interim statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or amounts of liabilities that might be necessary should the Company be unable to continue in existence. The Company’s inability to obtain required funding in the near future or its inability to obtain funding on favorable terms will have a material adverse effect on its operations and strategic development plan for future growth. If the Company cannot successfully raise additional capital and implement its strategic development plan, its liquidity, financial condition and business prospects will be materially and adversely affected, and the Company may have to cease operations.	Going Concern The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The Company has experienced negative cash flows from operations since inception and has an accumulated deficit of approximately $368 million and a working capital deficiency of approximately $6.7 million at July 31, 2013. The Company has funded its activities to date almost exclusively from debt and equity financings, as well as the recent sales of non-essential real estate assets in fiscal 2012, fiscal 2013 and the beginning of fiscal 2014. The Company will continue to require substantial funds to continue research and development, including pre-clinical studies and clinical trials of its product candidates, and to commence sales and marketing efforts, if the U.S. Food and Drug Administration or other regulatory approvals are obtained. Management’s plans in order to meet its operating cash flow requirements include financing activities such as private placements of its common stock, preferred stock offerings, issuances of debt and convertible debt instruments. Management will be limited in the financing activities that the Company undertakes in the near future as the securities purchase agreements that the Company entered into on December 10, 2012 and June 17, 2013 with certain investors prohibit the Company from (i) issuing additional equity securities until 60 days after the effective date of a registration statement covering the resale of the common stock issuable upon exercise of the warrants and conversion of the preferred stock sold in those transactions; and (ii) issuing additional debt or equity securities with variable conversion or exercise prices until December 10, 2013 and June 17, 2014, respectively. Management is also actively pursuing financial and strategic alternatives, including strategic investments and divestitures, industry collaboration activities and strategic partners. Management has sold its non-essential real estate assets which are classified as Assets Held for Investment to augment its cash position. These factors raise substantial doubt regarding the Company’s ability to continue as a going concern. There are no assurances that such additional funding will be achieved and that it will succeed in its future operations. The consolidated financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or amounts of liabilities that might be necessary should the Company be unable to continue in existence. The Company’s inability to obtain required funding in the near future or its inability to obtain funding on favorable terms will have a material adverse effect on its operations and strategic development plan for future growth. If the Company cannot successfully raise additional capital and implement its strategic development plan, its liquidity, financial condition and business prospects will be materially and adversely affected, and the Company may have to cease operations.

Going Concern

3 Months Ended

12 Months Ended

Jan. 31, 2014

Jul. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Going Concern

The accompanying interim statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The Company has experienced negative cash flows from operations since inception and has an accumulated deficit of approximately $371 million and a working capital deficiency of approximately $4.9 million at January 31, 2014. The Company has funded its activities to date almost exclusively from debt and equity financings, as well as the recent sales of non-essential real estate assets in fiscal 2012, fiscal 2013 and the first half of fiscal 2014 (see Note 11).

The Company will continue to require substantial funds to continue research and development, including pre-clinical studies and clinical trials of its product candidates, and to commence sales and marketing efforts, if the U.S. Food and Drug Administration or other regulatory approvals are obtained. Management’s plans in order to meet its operating cash flow requirements include financing activities such as private placements of its common stock, preferred stock offerings, issuances of debt and convertible debt instruments. Management will be limited in the financing activities that the Company undertakes in the near future as the securities purchase agreements that the Company entered into on June 17, 2013 and January 14, 2014 with certain investors prohibit the Company from (i) issuing additional equity securities until 60 days after the effective date of a registration statement covering the resale of the common stock issuable upon exercise of the warrants and conversion of the preferred stock sold in those transactions; and (ii) issuing additional debt or equity securities with variable conversion or exercise prices until June 17, 2014 and January 14, 2015, respectively. Management is also actively pursuing financial and strategic alternatives, including strategic investments and divestitures, industry collaboration activities and strategic partners. Management has sold its non-essential real estate assets which were classified as Assets Held for Investment to augment its cash position.

These factors raise substantial doubt regarding the Company’s ability to continue as a going concern. There are no assurances that such additional funding will be achieved and that it will succeed in its future operations. The interim statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or amounts of liabilities that might be necessary should the Company be unable to continue in existence. The Company’s inability to obtain required funding in the near future or its inability to obtain funding on favorable terms will have a material adverse effect on its operations and strategic development plan for future growth. If the Company cannot successfully raise additional capital and implement its strategic development plan, its liquidity, financial condition and business prospects will be materially and adversely affected, and the Company may have to cease operations.

Going Concern

The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The Company has experienced negative cash flows from operations since inception and has an accumulated deficit of approximately $368 million and a working capital deficiency of approximately $6.7 million at July 31, 2013. The Company has funded its activities to date almost exclusively from debt and equity financings, as well as the recent sales of non-essential real estate assets in fiscal 2012, fiscal 2013 and the beginning of fiscal 2014.

The Company will continue to require substantial funds to continue research and development, including pre-clinical studies and clinical trials of its product candidates, and to commence sales and marketing efforts, if the U.S. Food and Drug Administration or other regulatory approvals are obtained. Management’s plans in order to meet its operating cash flow requirements include financing activities such as private placements of its common stock, preferred stock offerings, issuances of debt and convertible debt instruments. Management will be limited in the financing activities that the Company undertakes in the near future as the securities purchase agreements that the Company entered into on December 10, 2012 and June 17, 2013 with certain investors prohibit the Company from (i) issuing additional equity securities until 60 days after the effective date of a registration statement covering the resale of the common stock issuable upon exercise of the warrants and conversion of the preferred stock sold in those transactions; and (ii) issuing additional debt or equity securities with variable conversion or exercise prices until December 10, 2013 and June 17, 2014, respectively. Management is also actively pursuing financial and strategic alternatives, including strategic investments and divestitures, industry collaboration activities and strategic partners. Management has sold its non-essential real estate assets which are classified as Assets Held for Investment to augment its cash position.

These factors raise substantial doubt regarding the Company’s ability to continue as a going concern. There are no assurances that such additional funding will be achieved and that it will succeed in its future operations. The consolidated financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or amounts of liabilities that might be necessary should the Company be unable to continue in existence. The Company’s inability to obtain required funding in the near future or its inability to obtain funding on favorable terms will have a material adverse effect on its operations and strategic development plan for future growth. If the Company cannot successfully raise additional capital and implement its strategic development plan, its liquidity, financial condition and business prospects will be materially and adversely affected, and the Company may have to cease operations.

- Definition

Disclosure of accounting policy for reporting when there is a substantial doubt about an entity's ability to continue as a going concern for a reasonable period of time (generally a year from the balance sheet date). Disclose: (a) pertinent conditions and events giving rise to the assessment of substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time, (b) the possible effects of such conditions and events, (c) management's evaluation of the significance of those conditions and events and any mitigating factors, (d) possible discontinuance of operations, (e) management's plans (including relevant prospective financial information), and (f) information about the recoverability or classification of recorded asset amounts or the amounts or classification of liabilities. If management's plans alleviate the substantial doubt about the entity's ability to continue as a going concern, disclosure of the principal conditions and events that initially raised the substantial doubt about the entity's ability to continue as a going concern would be expected to be considered. Disclose whether operations for the current or prior years generated sufficient cash to cover current obligations, whether waivers were obtained from creditors relating to the company's default under the provisions of debt agreements and possible effects of such conditions and events, such as: whether there is a possible need to obtain additional financing (debt or equity) or to liquidate certain holdings to offset future cash flow deficiencies. Disclose appropriate parent company information when parent is dependent upon remittances from subsidiaries to satisfy its obligations.

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