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GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Finite-Lived Intangible Assets [Line Items]    
Net intangible assets $ 11,209 $ 20,387
Wedge bonder developed technology [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Gross intangible assets 33,200 33,200
Accumulated amortization (23,715) (18,973)
Net intangible assets 9,485 14,227
Average estimated useful lives (in years) 7 years  
Wedge bonder customer relationships [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Gross intangible assets 19,300 19,300
Accumulated amortization (19,300) (15,440)
Net intangible assets 0 3,860
Average estimated useful lives (in years) 5 years  
Wedge bonder trade name [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Gross intangible assets 4,600 4,600
Accumulated amortization (2,876) (2,300)
Net intangible assets 1,724 2,300
Average estimated useful lives (in years) 8 years  
Wedge bonder other intangible assets [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Gross intangible assets 2,500 2,500
Accumulated amortization (2,500) (2,500)
Net intangible assets $ 0 $ 0
Average estimated useful lives (in years) 1 year 10 months 24 days