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SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Jan. 02, 2016 | Dec. 27, 2014
Net revenue: |  |
Net revenue | $ 108,534 | $ 107,438
Cost of sales : |  |
Cost of sales | 58,113 | 52,704
Gross profit : |  |
Gross profit | 50,421 | 54,734
Operating expenses: |  |
Operating expenses | 52,126 | 45,008
Income from operations: |  |
Income from operations | (1,705) | 9,726
Equipment [Member] |  |
Net revenue: |  |
Net revenue | 92,974 | 90,956
Income from operations: |  |
Income from operations | (6,426) | 5,446
Expendable Tools [Member] |  |
Net revenue: |  |
Net revenue | 15,560 | 16,482
Income from operations: |  |
Income from operations | $ 4,721 | $ 4,280

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