Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 4,389	$ 13,585	$ 8,624	$ 38,246
Other comprehensive income (loss), net of tax
Foreign currency translation gain (loss) adjustments	3,974	506	4,922	(2,165)
Derivative instruments
Unrealized net gain (loss)	(725)	(1,074)	97	(2,882)
Net (gain) loss reclassified to earnings	(270)	(655)	(946)	(2,136)
Defined benefit pension plan
Unrealized net gain (loss)	211	419	(1,429)	(167)
Net (gain) loss reclassified to earnings	211	95	632	286
Currency exchange rate gain (loss)	(197)	(82)	(324)	179
Other comprehensive income (loss)	3,204	(791)	2,952	(6,885)
Comprehensive income	$ 7,593	$ 12,794	$ 11,576	$ 31,361