CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 11,888	$ (3,555)	$ 25,365	$ 3,962
Other comprehensive (loss)/income:
Foreign currency translation adjustment	(835)	(409)	1,679	(1,388)
Unrecognized actuarial (loss)/gain on pension plan, net of tax	(41)	18	(66)	22
Foreign currency translation and pension plan, net of tax	(876)	(391)	1,613	(1,366)
Derivatives designated as hedging instruments:
Unrealized (loss)/gain on derivative instruments, net of tax	(1,981)	161	(1,374)	88
Reclassification adjustment for loss on derivative instruments recognized, net of tax	72	267	269	1,132
Net (decrease)/increase from derivatives designated as hedging instruments, net of tax	(1,909)	428	(1,105)	1,220
Total other comprehensive (loss)/gain	(2,785)	37	508	(146)
Comprehensive income/(loss)	$ 9,103	$ (3,518)	$ 25,873	$ 3,816