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SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Net revenue:
Net revenue	$ 216,414	$ 164,634	$ 481,348	$ 417,299
Cost of sales :
Cost of sales	116,374	87,063	261,240	216,424
Gross profit :
Gross profit	100,040	77,571	220,108	200,875
Operating expenses:
Operating expenses	61,418	61,485	171,482	165,272
Income from operations:
Income from operations	38,622	16,086	48,626	35,603
Equipment [Member]
Net revenue:
Net revenue	200,128	148,987	434,164	369,759
Income from operations:
Income from operations	34,676	12,849	35,966	24,602
Expendable Tools [Member]
Net revenue:
Net revenue	16,286	15,647	47,184	47,540
Income from operations:
Income from operations	$ 3,946	$ 3,237	$ 12,660	$ 11,001

X

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Section S99
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