v2.4.0.6
Segment Information (Schedule Of Sales By Geographic Location Based On The Sales Office Location) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Sep. 24, 2011
Jun. 25, 2011
Mar. 26, 2011
Dec. 25, 2010
Sep. 25, 2010
Jun. 26, 2010
Mar. 31, 2012
Mar. 26, 2011
Mar. 27, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales $ 110,631 [1] $ 122,368 $ 101,602 $ 92,242 $ 91,433 [2] $ 95,625 $ 100,598 $ 81,915 $ 426,843 $ 369,571 $ 220,989
United States [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 50,230 66,701 47,936
United Kingdom [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 23,927 27,398 17,156
China [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 294,143 205,775 103,992
Hong Kong [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 8,671 9,216 5,611
Japan [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 15,196 16,902 12,335
South Korea [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 9,781 12,413 10,134
Taiwan [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 10,662 13,073 10,585
Other Asia [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 13,063 16,012 12,381
Other Non-U.S. Countries [Member]
                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net sales                 $ 1,170 $ 2,081 $ 859
[1] The $39.5 million tax benefit recorded in the fourth quarter of 2012 favorably impacted net income, as a result of a $37.3 million release in valuation allowance on deferred tax assets.
[2] Net income was favorably impacted by a $117.0 million benefit to tax expense to decrease the valuation allowance on our U.S. deferred tax assets, which was partially offset by reduced gross margins attributable to a charge of approximately $4.2 million due to a production issue with a new audio device that entered high volume production in March 2011.