Debt	6 Months Ended
Oct. 30, 2011
Debt Disclosure [Abstract]
Debt [Text Block]	Debt Korean Bank Loans As a result of the acquisition of Ignis (see "Note 3. Acquisition of Ignis ASA"), the Company's consolidated liabilities include certain loan obligations of Fi-ra to three Korean banks under which an acquisition-date aggregate principal balance of approximately $2.5 million was outstanding, with interest rates ranging from 4.5% to 6.7% per annum. These loans require monthly interest payments with all principal payable at maturity. These loans mature at various dates beginning in February 2012 through June 2012 and are secured by certain property of Fi-ra. During the first quarter of fiscal 2012, Fi-ra entered into a $1.8 million loan agreement with a Korean bank. Borrowings under this loan bear interest at variable rates based on the 4-month KORIBOR plus 0.33%, under which the applicable interest rate is currently 4% per annum. This loan requires monthly interest payments with all principal payable at maturity. This loan matures in May 2012 and is secured by certain property of Fi-ra. The remaining principal outstanding under these loans as of October 30, 2011 was $4.3 million . Norwegian Bank Loans As a result of the acquisition of Ignis, the Company's consolidated liabilities included two loan obligations of SmartOptics to a Norwegian bank under which an acquisition-date aggregate principal balance of approximately $5.6 million was outstanding with interest rates ranging from 5.25% to 6% per annum. These loans were fully repaid in October 2011. Swedish Loan As a result of the acquisition of Ignis, the Company's consolidated liabilities included a loan obligation of Syntune to a financing institution under which an acquisition-date aggregate principal balance of approximately $7.8 million was outstanding, with an interest rate of 12% per annum. This loan was fully repaid in July 2011. As a result of the early repayment of this loan, the Company incurred a prepayment charge of $419,000 which the Company recognized as loss on debt extinguishment in its condensed consolidated statement of operations for the six months ended October 30, 2011.

Debt

6 Months Ended

Oct. 30, 2011

Debt

Korean Bank Loans

As a result of the acquisition of Ignis (see "Note 3. Acquisition of Ignis ASA"), the Company's consolidated liabilities include certain loan obligations of Fi-ra to three Korean banks under which an acquisition-date aggregate principal balance of approximately $2.5 million was outstanding, with interest rates ranging from 4.5% to 6.7% per annum. These loans require monthly interest payments with all principal payable at maturity. These loans mature at various dates beginning in February 2012 through June 2012 and are secured by certain property of Fi-ra.

During the first quarter of fiscal 2012, Fi-ra entered into a $1.8 million loan agreement with a Korean bank. Borrowings under this loan bear interest at variable rates based on the 4-month KORIBOR plus 0.33%, under which the applicable interest rate is currently 4% per annum. This loan requires monthly interest payments with all principal payable at maturity. This loan matures in May 2012 and is secured by certain property of Fi-ra.

The remaining principal outstanding under these loans as of October 30, 2011 was $4.3 million .

Norwegian Bank Loans

As a result of the acquisition of Ignis, the Company's consolidated liabilities included two loan obligations of SmartOptics to a Norwegian bank under which an acquisition-date aggregate principal balance of approximately $5.6 million was outstanding with interest rates ranging from 5.25% to 6% per annum. These loans were fully repaid in October 2011.

Swedish Loan

As a result of the acquisition of Ignis, the Company's consolidated liabilities included a loan obligation of Syntune to a financing institution under which an acquisition-date aggregate principal balance of approximately $7.8 million was outstanding, with an interest rate of 12% per annum. This loan was fully repaid in July 2011. As a result of the early repayment of this loan, the Company incurred a prepayment charge of $419,000 which the Company recognized as loss on debt extinguishment in its condensed consolidated statement of operations for the six months ended October 30, 2011.