v2.4.0.6
Income Taxes (Summary Of Provision (Benefit) For Income Taxes, Statutory Federal Rate Pretax Income Reconciliation) (Details)
12 Months Ended
Mar. 31, 2012
Mar. 26, 2011
Mar. 27, 2010
Income Taxes [Abstract]      
Expected income tax provision at the U.S. federal statutory rate 35.00% 35.00% 35.00%
Valuation allowance changes affecting the provision of income taxes (46.70%) (178.60%) (80.50%)
Foreign taxes at different rates   0.10% (2.70%)
Foreign earnings taxed in the U.S.     0.20%
Refundable R&D credit     (0.30%)
Stock compensation 1.00% (0.10%) 4.20%
Nondeductible expenses 0.10% 1.10% 0.40%
Other 0.60% 0.90% (0.20%)
Benefit for income taxes (10.00%) (141.60%) (43.90%)