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SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017
Net revenue:
Net revenue	$ 221,772	$ 199,613	$ 435,463	$ 349,252
Income from operations:
Income from operations	38,436	36,503	77,595	55,562
Capital Equipment [Member]
Net revenue:
Net revenue	177,132	161,443	348,735	275,717
Income from operations:
Income from operations	28,863	30,708	58,844	42,854
Aftermarket Products and Services (APS) [Member]
Net revenue:
Net revenue	44,640	38,170	86,728	73,535
Income from operations:
Income from operations	$ 9,573	$ 5,795	$ 18,751	$ 12,708

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- Definition

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.

+ 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 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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