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Financial Statement Details (Details 4) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Accrued warranty obligations    
Warranty liability at beginning of period $ 1,525 $ 2,279
Additions charged to operations 6,261 2,642
Deductions from liability (5,457) (3,396)
Warranty liability at end of period $ 2,329 $ 1,525