Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 04, 2020	Dec. 29, 2018
Income Statement [Abstract]
Net sales	$ 852,409	$ 765,544
Cost of sales	773,219	693,161
Gross profit	79,190	72,383
Selling and administrative expenses	39,256	35,432
Operating income	39,934	36,951
Other income (expense):
Interest expense	(4,132)	(2,249)
Interest income	645	525
Miscellaneous, net	(2,173)	(1,112)
Income before income taxes	34,274	34,115
Income tax expense	3,268	11,889
Net income	$ 31,006	$ 22,226
Earnings per share:
Basic (in dollars per share)	$ 1.06	$ 0.71
Diluted (in dollars per share)	$ 1.03	$ 0.69
Weighted average shares outstanding:
Basic (in shares)	29,147	31,403
Diluted (in shares)	30,065	32,286
Other comprehensive income (loss) :
Derivative instrument fair value adjustment	$ 2,223	$ 378
Foreign currency translation adjustments	5,204	(1,871)
Other comprehensive income (loss)	7,427	(1,493)
Total comprehensive income	$ 38,433	$ 20,733