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SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Net revenue:
Net revenue	$ 149,639	$ 108,534
Cost of sales :
Cost of sales	81,321	58,113
Gross profit :
Gross profit	68,318	50,421
Operating expenses:
Operating expenses	51,037	52,126
Income from operations:
Income from operations	17,281	(1,705)
Equipment [Member]
Net revenue:
Net revenue	132,979	92,974
Income from operations:
Income from operations	12,674	(6,426)
Expendable Tools [Member]
Net revenue:
Net revenue	16,660	15,560
Income from operations:
Income from operations	$ 4,607	$ 4,721

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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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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-Name Accounting Standards Codification
-Topic 225
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-Section S99
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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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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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