Segment Information (Summary of Consolidated Net Sales and Earnings by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total net sales	$ 541,586	$ 537,619
Interest expense, net	(7,665)	(8,411)
Consolidated earnings before income taxes	37,746	47,584
Aerospace [Member]
Segment Reporting Information [Line Items]
Total net sales	336,435	321,667
Industrial [Member]
Segment Reporting Information [Line Items]
Total net sales	205,151	215,952
Operating Segments [Member] | Aerospace [Member]
Segment Reporting Information [Line Items]
Total net sales	336,435	321,667
Segment earnings (loss)	51,083	46,466
Operating Segments [Member] | Industrial [Member]
Segment Reporting Information [Line Items]
Total net sales	205,151	215,952
Segment earnings (loss)	23,693	32,888
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
Segment earnings (loss)	$ (29,365)	$ (23,359)