9. LINE OF CREDIT	12 Months Ended
May. 31, 2015
Line of Credit Facility [Abstract]
Line of Credit	9. LINE OF CREDIT: On August 25, 2011, the Company entered into a working capital credit facility agreement allowing the Company to borrow up to $1.5 million based upon qualified accounts receivable, and export-related inventory. On May 29, 2012, the credit agreement was amended to increase the borrowing limit to $2.0 million. On September 11, 2012, the Company entered into the second amendment to the Loan and Security Agreement to increase the borrowing limit under the credit facility from $2.0 million to $2.5 million. On August 21, 2013, the Company entered into the Third Amendment to Loan and Security Agreement to extend the term of the agreement to August 22, 2014. Under the terms of the amendment to the line of credit, the lender will also have a security interest in the Company’s intellectual property. On August 22, 2014, the Company entered into the Fourth Amendment to Loan and Security Agreement to extend the term of the agreement to August 21, 2015. The line of credit is collateralized by all of the Company’s assets. Each account receivable financed by the lender will bear an annual interest rate or finance charge equal to the greater of the lender's prime rate less 0.5%, or 3.50%, if the Company meets certain borrowing base requirements. If the Company does not meet the borrowing base requirements, each account receivable financed by the lender will bear an annual interest rate or finance charge equal to the greater of the lender's prime rate plus 0.75%, or 4.75%. The applicable interest is calculated based on the full amount of the account receivable and export-related inventory provided as collateral for the actual amounts borrowed. Depending on the composition of the collateral items, whether or not the Company meets certain borrowing base requirements and the relative cash position of the Company, the equivalent annual interest rate applied to the actual loan balances may vary from 3.89% to 8.94%, assuming that the bank’s prime rate is 4.00% or less. The average loan balance in fiscal 2015 was $492,000. At May 31, 2014, the Company had drawn $777,000 against the credit facility. The working capital credit facility agreement was terminated on April 10, 2015 upon execution of the Convertible Notes Purchase (the “Convertible Notes”) and Credit Facility (the “Credit Facility”) Agreement with QVT Fund LP and Quintessence Fund L.P. (the “Purchase Agreement”). See Note 11, “LONG-TERM DEBT,” for a description of the Purchase Agreement. The Credit Facility entered into on April 10, 2015 allows the Company to borrow an aggregate principal amount of up to $2.0 million. Advances under the Credit Facility will bear interest at an annual rate of 5%. Each advance under the Credit Facility and any accrued and unpaid interest thereon must be repaid within 90 days from the date on which such advance is made. Unless paid in full at maturity, amounts owing under the credit facility may be converted by the holder into Convertible Notes. Advances under the Credit Facility may be prepaid without any prepayment premium or penalty. The Credit Facility is secured by substantially all of the assets of the Company. At May 31, 2015, the Company has not drawn any amount against the Credit Facility.

9. LINE OF CREDIT

12 Months Ended

May. 31, 2015

9. LINE OF CREDIT:

On August 25, 2011, the Company entered into a working capital credit facility agreement allowing the Company to borrow up to $1.5 million based upon qualified accounts receivable, and export-related inventory. On May 29, 2012, the credit agreement was amended to increase the borrowing limit to $2.0 million. On September 11, 2012, the Company entered into the second amendment to the Loan and Security Agreement to increase the borrowing limit under the credit facility from $2.0 million to $2.5 million. On August 21, 2013, the Company entered into the Third Amendment to Loan and Security Agreement to extend the term of the agreement to August 22, 2014. Under the terms of the amendment to the line of credit, the lender will also have a security interest in the Company’s intellectual property. On August 22, 2014, the Company entered into the Fourth Amendment to Loan and Security Agreement to extend the term of the agreement to August 21, 2015. The line of credit is collateralized by all of the Company’s assets. Each account receivable financed by the lender will bear an annual interest rate or finance charge equal to the greater of the lender's prime rate less 0.5%, or 3.50%, if the Company meets certain borrowing base requirements. If the Company does not meet the borrowing base requirements, each account receivable financed by the lender will bear an annual interest rate or finance charge equal to the greater of the lender's prime rate plus 0.75%, or 4.75%. The applicable interest is calculated based on the full amount of the account receivable and export-related inventory provided as collateral for the actual amounts borrowed. Depending on the composition of the collateral items, whether or not the Company meets certain borrowing base requirements and the relative cash position of the Company, the equivalent annual interest rate applied to the actual loan balances may vary from 3.89% to 8.94%, assuming that the bank’s prime rate is 4.00% or less. The average loan balance in fiscal 2015 was $492,000. At May 31, 2014, the Company had drawn $777,000 against the credit facility. The working capital credit facility agreement was terminated on April 10, 2015 upon execution of the Convertible Notes Purchase (the “Convertible Notes”) and Credit Facility (the “Credit Facility”) Agreement with QVT Fund LP and Quintessence Fund L.P. (the “Purchase Agreement”). See Note 11, “LONG-TERM DEBT,” for a description of the Purchase Agreement.

The Credit Facility entered into on April 10, 2015 allows the Company to borrow an aggregate principal amount of up to $2.0 million. Advances under the Credit Facility will bear interest at an annual rate of 5%. Each advance under the Credit Facility and any accrued and unpaid interest thereon must be repaid within 90 days from the date on which such advance is made. Unless paid in full at maturity, amounts owing under the credit facility may be converted by the holder into Convertible Notes. Advances under the Credit Facility may be prepaid without any prepayment premium or penalty. The Credit Facility is secured by substantially all of the assets of the Company. At May 31, 2015, the Company has not drawn any amount against the Credit Facility.