Condensed Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 541,586	$ 537,619
Costs and expenses:
Cost of goods sold	419,151	401,640
Selling, general and administrative expenses	62,306	56,111
Research and development costs	25,392	31,996
Interest expense	8,306	8,906
Interest income	(641)	(495)
Other (income) expense, net	(10,674)	(8,123)
Total costs and expenses	503,840	490,035
Earnings before income taxes	37,746	47,584
Income tax expense	7,441	6,014
Net earnings	$ 30,305	$ 41,570
Earnings per share:
Basic earnings per share	$ 0.48	$ 0.66
Diluted earnings per share	$ 0.47	$ 0.64
Weighted-Average Common Shares Outstanding:
Basic	63,094	62,812
Diluted	65,099	64,892