CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 591,749	$ 541,523
Cost of goods and services	425,907	377,387
Gross profit	165,842	164,136
Selling, general and administrative expenses	127,352	111,709
Income from operations	38,490	52,427
Other income (expense)
Interest expense	(15,681)	(15,690)
Interest income	33	44
Other, net	1,381	357
Total other expense, net	(14,267)	(15,289)
Income before taxes from continuing operations	24,223	37,138
Provision for income taxes	7,318	11,708
Income from continuing operations	16,905	25,430
Discontinued operations:
Income from operations of discontinued operations	3,014	2,031
Provision (benefit) for income taxes	621	(2,039)
Income from discontinued operations	2,393	4,070
Net income	$ 19,298	$ 29,500
Basic earnings per common share:
Income from continuing operations (in dollars per share)	$ 0.33	$ 0.50
Income from discontinued operations (in dollars per share)	0.05	0.08
Basic earnings per common share (in dollars per share)	$ 0.38	$ 0.58
Basic weighted-average shares outstanding (in shares)	51,178	50,596
Diluted earnings per common share:
Income from continuing operations (in dollars per share)	$ 0.31	$ 0.48
Income (loss) from discontinued operations (in dollars per share)	0.04	0.08
Diluted earnings per common share (in dollars per share)	$ 0.36	$ 0.55
Diluted weighted-average shares outstanding (in shares)	53,753	53,192
Dividends paid per common share (in dollars per share)	$ 0.09	$ 0.08
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	$ (2,319)	$ 12,123
Pension and other post retirement plans	668	1,706
Change in cash flow hedges	(1,100)	(688)
Total other comprehensive income, net of taxes	(2,751)	13,141
Comprehensive income, net	$ 16,547	$ 42,641