Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 04, 2020	Jun. 29, 2019	Jul. 04, 2020	Jun. 29, 2019
Income Statement [Abstract]
Net sales	$ 857,394	$ 799,644	$ 2,477,167	$ 2,354,239
Cost of sales	774,513	728,614	2,253,651	2,140,190
Gross profit	82,881	71,030	223,516	214,049
Selling and administrative expenses	37,028	36,627	114,517	109,521
Restructuring and impairment charges	0	0	6,003	0
Operating income	45,853	34,403	102,996	104,528
Other income (expense):
Interest expense	(3,988)	(3,711)	(11,934)	(9,105)
Interest income	368	445	1,546	1,410
Miscellaneous, net	(600)	(1,419)	(2,619)	(4,304)
Income before income taxes	41,633	29,718	89,989	92,529
Income tax expense	5,791	4,917	10,215	20,744
Net income	$ 35,842	$ 24,801	$ 79,774	$ 71,785
Earnings per share:
Basic (in dollars per share)	$ 1.23	$ 0.83	$ 2.73	$ 2.34
Diluted (in dollars per share)	$ 1.20	$ 0.81	$ 2.66	$ 2.28
Weighted average shares outstanding:
Basic (in shares)	29,199	29,912	29,210	30,637
Diluted (in shares)	29,793	30,635	29,936	31,420
Other comprehensive income (loss):
Derivative instrument fair value adjustment	$ 3,178	$ (406)	$ (1,138)	$ 1,956
Foreign currency translation adjustments	5,586	(679)	3,463	(2,035)
Other comprehensive income (loss):	8,764	(1,085)	2,325	(79)
Total comprehensive income	$ 44,606	$ 23,716	$ 82,099	$ 71,706