CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2016	Dec. 27, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) / income	$ (91)	$ 7,842
Other comprehensive income:
Foreign currency translation adjustment	(1,130)	(679)
Unrecognized actuarial loss, Switzerland pension plan, net of tax	28	0
Foreign currency translation and pension plan, net of tax	(1,102)	(679)
Derivatives designated as hedging instruments:
Unrealized loss on derivative instruments, net of tax	(187)	(640)
Reclassification adjustment for loss on derivative instruments recognized, net of tax	89	248
Net decrease from derivatives designated as hedging instruments, net of tax	(98)	(392)
Total other comprehensive loss	(1,200)	(1,071)
Comprehensive (loss) / income	$ (1,291)	$ 6,771