Business Segment Information - Schedule Of Geographic Information Net Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Net Sales	$ 956,033	$ 857,502	$ 715,440
United States
Net Sales	665,391	603,172	517,000
Asia
Net Sales	116,300	132,700	104,700
Europe
Net Sales	90,400	72,400	53,500
Canada
Net Sales	46,800	31,200	27,000
Other
Net Sales	$ 37,100	$ 18,000	$ 13,200