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Fair Value Measurements (Details 2) (USD $)
 0 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Oct. 02, 2013
Oct. 02, 2012
Dec. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Level 3
Purchase order related contingent payments
Minimum
Dec. 31, 2013
Level 3
Purchase order related contingent payments
Maximum
Dec. 31, 2013
Level 3
Revenue and gross margin related contingent payments
Minimum
Dec. 31, 2013
Level 3
Revenue and gross margin related contingent payments
Maximum
Dec. 31, 2012
Data Storage
Dec. 31, 2013
LED And Solar
Dec. 31, 2013
LED And Solar
Reconciliation of the amount in Level 3                          
Addition of contingent consideration       $ (33,539,000)                  
Payment on contingent consideration       5,000,000                  
Fair value adjustment of contingent consideration       (829,000)                  
Balance at the end of the period     (29,368,000) (29,368,000)                  
Measurement of certain assets for fair value on a non-recurring basis                          
Discount rate (as a percent)             3.60% 13.00% 15.50% 30.50%      
Impairment of tools held in property, plant and equipment                         900,000
Impairment of assets held in other assets     300,000 300,000                  
Other assets     38,726,000 38,726,000 16,781,000           100,000    
Asset impairment $ 0 $ 0   $ 1,220,000 $ 1,335,000 $ 584,000         $ 1,300,000 $ 900,000