CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 47,112	$ 50,639	$ 62,988
Other comprehensive income:
Foreign currency translation adjustment	624	(3,360)	(983)
Unrecognized actuarial (loss), Switzerland pension plan, net of tax	(1,791)	19	(391)
Other Comprehensive Income (Loss), Foreign Currency Transaction, Translation Adjustment and unrecognized actuarial (loss), Net of Tax, Portion Attributable to Parent	(1,167)	(3,341)	(1,374)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(566)	(1,008)	114
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	104	1,008	(114)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent	(462)	0	0
Total other comprehensive loss	(1,629)	(3,341)	(1,374)
Comprehensive income	$ 45,483	$ 47,298	$ 61,614