Condensed Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 614,332	$ 556,675	$ 1,742,757	$ 1,675,615
Costs and expenses:
Cost of goods sold	480,403	422,457	1,352,979	1,258,340
Selling, general and administrative expenses	46,490	48,021	152,920	148,461
Research and development costs	32,224	29,765	90,000	89,388
Interest expense	8,533	8,397	25,036	25,552
Interest income	(353)	(308)	(1,494)	(1,086)
Other (income) expense, net	(3,252)	(10,355)	(18,813)	(29,809)
Total costs and expenses	564,045	497,977	1,600,628	1,490,846
Earnings before income taxes	50,287	58,698	142,129	184,769
Income tax expense	10,841	9,837	24,472	26,025
Net earnings	$ 39,446	$ 48,861	$ 117,657	$ 158,744
Earnings per share:
Basic earnings per share	$ 0.65	$ 0.77	$ 1.90	$ 2.51
Diluted earnings per share	$ 0.64	$ 0.74	$ 1.84	$ 2.42
Weighted Average Common Shares Outstanding:
Basic	60,506	63,559	62,052	63,215
Diluted	62,088	65,910	63,937	65,499