Consolidated Condensed Statements of Earnings - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Income Statement [Abstract]
Net sales	$ 679,676	$ 627,535
Cost of sales	480,174	443,150
Gross profit	199,502	184,385
Research and development	31,876	32,334
Selling, general and administrative	96,326	94,619
Interest	9,682	8,646
Other	3,434	952
Earnings before income taxes	58,184	47,834
Income taxes	14,115	46,535
Net earnings	$ 44,069	$ 1,299
Net earnings per share
Basic	$ 1.27	$ 0.04
Diluted	$ 1.25	$ 0.04
Average common shares outstanding
Basic	34,815,255	35,772,406
Diluted	35,125,829	36,201,054