Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 25,084	$ 27,494	$ 45,462
Other comprehensive income (loss), net of tax
Foreign currency translation gain (loss) adjustments	3,273	(332)	(11,215)
Derivative instruments
Unrealized net gain (loss)	2,110	(855)	2,226
Net (gain) loss reclassified to earnings	98	214	(2,738)
Defined benefit pension plan
Unrealized net gain (loss)	4,132	(4,213)	(874)
Net (gain) loss reclassified to earnings	696	408	350
Currency exchange rate gain (loss)	(489)	(18)	850
Other comprehensive income (loss)	9,820	(4,796)	(11,401)
Comprehensive income	$ 34,904	$ 22,698	$ 34,061