CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 27, 2020	Mar. 29, 2019	Mar. 27, 2020	Mar. 29, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 20,387	$ 21,923	$ 26,817	$ 25,444
Foreign currency translation:
Foreign currency translation	(1,607)	(148)	(907)	(1,848)
Defined benefit pension plan:
Change in pension plans, net of tax of $20, $33, $41 and $66, respectively	62	105	123	210
Total other comprehensive loss	(1,545)	(43)	(784)	(1,638)
Total comprehensive income	$ 18,842	$ 21,880	$ 26,033	$ 23,806