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GOODWILL AND INTANGIBLE ASSETS (Net intangible assets) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 02, 2016	Oct. 03, 2015
Finite-Lived Intangible Assets [Line Items]
Net intangible assets	$ 52,475	$ 57,471
Wedge bonder developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	74,080	74,080
Accumulated amortization	(37,288)	(35,244)
Net intangible assets	36,792	38,836
Wedge bonder customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	36,968	36,968
Accumulated amortization	(23,717)	(21,509)
Net intangible assets	13,251	15,459
Wedge bonder trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	7,515	7,515
Accumulated amortization	(5,083)	(4,339)
Net intangible assets	2,432	3,176
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
Minimum [Member] | Wedge bonder developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	7 years
Minimum [Member] | Wedge bonder customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	5 years
Minimum [Member] | Wedge bonder trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	7 years
Maximum [Member] | Wedge bonder developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	15 years
Maximum [Member] | Wedge bonder customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	6 years
Maximum [Member] | Wedge bonder trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Average estimated useful lives (in years)	8 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
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