CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue	$ 643,153	$ 649,384
Cost of goods and services	406,512	415,559
Gross profit	236,641	233,825
Selling, general and administrative expenses	152,803	152,720
Income from operations	83,838	81,105
Other income (expense)
Interest expense	(25,299)	(24,648)
Interest income	424	104
Gain on sale of building	547	10,852
Other, net	632	607
Total other expense, net	(23,696)	(13,085)
Income before taxes	60,142	68,020
Provision for income taxes	17,965	19,318
Net income	$ 42,177	$ 48,702
Basic earnings per common share (in dollars per share)	$ 0.86	$ 0.93
Basic weighted-average shares outstanding (in shares)	48,784	52,579
Diluted earnings per common share (in dollars per share)	$ 0.82	$ 0.88
Diluted weighted-average shares outstanding (in shares)	51,467	55,298
Dividends paid per common share (in dollars per share)	$ 0.15	$ 0.10
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	$ 10,238	$ 11,937
Pension and other post retirement plans	532	862
Change in cash flow hedges	(295)	(580)
Total other comprehensive income, net of taxes	10,475	12,219
Comprehensive income, net	$ 52,652	$ 60,921