INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 7,318	$ 11,708
Income before taxes from continuing operations	24,223	37,138
Restructuring charges	1,716	3,079
Restructuring charges, net of tax	1,330	2,301
Effective income tax rate reconciliation, acquisition cost	2,595
Effective income tax rate reconciliation, acquisition cost, net of tax	2,003
Effective income tax rate reconciliation, proxy contest cost	2,291
Effective income tax rate reconciliation, proxy contest cost, net of tax	1,768
Other tax expense (benefit) that affect comparability	$ (881)	$ (1,048)
Effective tax rate	31.50%	33.70%