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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 + Details
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