Note 10 - Subsequent Event	12 Months Ended
Jun. 30, 2015
Notes to Financial Statements
Subsequent Events [Text Block]	10. Subsequent Events On August 31, 2015, the Company sold senior secured convertible debentures of $15,000 (“Debentures”), Series A warrants to purchase up to 22,058,823 shares of the Company’s common stock at an exercise price equal to $0.68 per share for a period of five and one-half years (“Series A warrants”) and Series B warrants to purchase up to 12,132,353 shares of the Company’s common stock at an exercise price equal to $0.68 per share for a period of eighteen months (“Series B warrants”). At the initial closing on August 31, 2015, the Company received gross proceeds of $5,500. The remaining $9,500 of gross proceeds will be deposited in our deposit control account and released after receiving (i) stockholder approval of certain share issuances relating to the financing to meet Nasdaq listing requirements, (ii) stockholder approval of an amendment to the Company’s certificate of incorporation increasing its authorized number of shares of common stock to 350,000,000 and (iii) approval from California Institute for Regenerative Medicine (“CIRM”) of a grant in the amount of $10,000, for the U.S. pivotal clinical trial in critical limb ischemia. The debentures bear no interest, may be convertible into shares of the Company’s common stock at a conversion price of $0.68 per share and are secured by all of the Company’s assets. The Series A and B warrants are subject to vesting based upon the amount of funds actually received by the Company in the sale of the senior secured convertible debentures and are exercisable upon the earlier of the approval of the transaction by the Company’s stockholders and the 6 month anniversary of the issuance date. Following shareholder approval, the Series B warrants may be exercised on a cashless basis at market price at the time of exercise if it is lower than the conversion price subject to a floor of $0.10 per share. In September 2015, the Company effected a strategic reorganization which resulted in the elimination of approximately 15 positions. Non-recurring severance costs of approximately $245 are expected to be recorded in the first quarter of fiscal 2016.

10.

Subsequent Events

On August 31, 2015, the Company sold senior secured convertible debentures of $15,000 (“Debentures”), Series A warrants to purchase up to 22,058,823 shares of the Company’s common stock at an exercise price equal to $0.68 per share for a period of five and one-half years (“Series A warrants”) and Series B warrants to purchase up to 12,132,353 shares of the Company’s common stock at an exercise price equal to $0.68 per share for a period of eighteen months (“Series B warrants”). At the initial closing on August 31, 2015, the Company received gross proceeds of $5,500. The remaining $9,500 of gross proceeds will be deposited in our deposit control account and released after receiving (i) stockholder approval of certain share issuances relating to the financing to meet Nasdaq listing requirements, (ii) stockholder approval of an amendment to the Company’s certificate of incorporation increasing its authorized number of shares of common stock to 350,000,000 and (iii) approval from California Institute for Regenerative Medicine (“CIRM”) of a grant in the amount of $10,000, for the U.S. pivotal clinical trial in critical limb ischemia.

The debentures bear no interest, may be convertible into shares of the Company’s common stock at a conversion price of $0.68 per share and are secured by all of the Company’s assets. The Series A and B warrants are subject to vesting based upon the amount of funds actually received by the Company in the sale of the senior secured convertible debentures and are exercisable upon the earlier of the approval of the transaction by the Company’s stockholders and the 6 month anniversary of the issuance date. Following shareholder approval, the Series B warrants may be exercised on a cashless basis at market price at the time of exercise if it is lower than the conversion price subject to a floor of $0.10 per share.

In September 2015, the Company effected a strategic reorganization which resulted in the elimination of approximately 15 positions. Non-recurring severance costs of approximately $245 are expected to be recorded in the first quarter of fiscal 2016.