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SEGMENT INFORMATION (Schedule of net revenue by Capital Equipment end markets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 150,741	$ 115,908	$ 295,038	$ 273,116
Capital Equipment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	113,222	80,567	215,546	196,505
Capital Equipment [Member] | General Semiconductor [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	67,369	30,985	117,835	70,655
Capital Equipment [Member] | Automotive and Industrial [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	19,846	18,967	38,770	45,476
Capital Equipment [Member] | LED [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	10,167	7,091	22,058	24,536
Capital Equipment [Member] | Memory [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	8,950	11,697	19,853	39,312
Capital Equipment [Member] | Advanced Packaging [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 6,890	$ 11,827	$ 17,030	$ 16,526

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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- Definition

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+ References

No definition available.

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