Other Comprehensive Income (Loss) (Schedule Of Amounts Reclassified Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total revenue	$ 194,162	$ 199,279
Cost of sales	(116,234)	(125,815)
Selling and marketing	(32,028)	(30,470)
General and administrative	(20,562)	(24,023)
Income before income taxes	9,470	2,181
Provision for income taxes	23,681	(476)
Net income	33,151	1,705
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	(194)	98
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	36	(151)
Net income	(103)	268
Reclassification Out Of Accumulated Other Comprehensive Income | Defined Benefit Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	(71)	(133)
Selling and marketing	(37)	(69)
General and administrative	(22)	(42)
Income before income taxes	(130)	(244)
Provision for income taxes	39	74
Net income	(91)	(170)
Reclassification Out Of Accumulated Other Comprehensive Income | Currency exchange contracts gain (loss) | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total revenue	(158)	419
Reclassification Out Of Accumulated Other Comprehensive Income | Interest rate swaps | Unrealized Derivative Instrument
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net	$ 19	$ 0