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Consolidated Statements of Comprehensive Income (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
May 26, 2013
May 27, 2012
May 29, 2011
Revenues:      
Product sales $ 439,574 $ 314,414 $ 273,338
Services revenue, related party 2,134 3,138 3,391
Total revenues 441,708 317,552 276,729
Cost of revenue:      
Cost of product sales 377,078 262,859 227,167
Cost of services revenue 1,870 2,555 2,867
Total cost of revenue 378,948 265,414 230,034
Gross profit 62,760 52,138 46,695
Operating costs and expenses:      
Research and development 9,294 9,625 9,275
Selling, general and administrative 32,531 26,515 24,608
Other operating expenses (3,933) 1,421 4,780
Total operating costs and expenses 37,892 37,561 38,663
Operating income 24,868 14,577 8,032
Dividend income 1,125 1,125 328
Interest income 179 180 430
Interest expense (2,008) (929) (820)
Other income 8,100 5,331 472
Net income before taxes 32,264 20,284 8,442
Income tax expense (9,452) (7,185) (4,181)
Consolidated net income 22,812 13,099 4,261
Non-controlling interest (225) (403) (341)
Net income and comprehensive income applicable to common stockholders $ 22,587 $ 12,696 $ 3,920
Basic net income per share (in Dollars per share) $ 0.87 $ 0.49 $ 0.15
Diluted net income per share (in Dollars per share) $ 0.85 $ 0.49 $ 0.15
Shares used in per share computation:      
Basic (in Shares) 25,830 25,849 26,397
Diluted (in Shares) 26,626 26,126 26,626