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Condensed Consolidated Statements of Comprehensive Loss (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jul. 01, 2012
Jun. 30, 2013
Jul. 01, 2012
Net loss $ (3,567) $ (3,346) $ (13,075) $ (4,465)
Other comprehensive income (loss), net of tax        
Foreign currency translation adjustments 326 (189) (133) (85)
Unrealized investment gain 0 0 (29) 15
Other comprehensive income (loss) 326 (189) (162) (70)
Comprehensive loss $ (3,241) $ (3,535) $ (13,237) $ (4,535)