INCOME TAXES (Details) - Components of Income before taxes and discontinued operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Domestic	$ 42,634	$ 49,723	$ 4,942
Non-U.S.	40,123	22,455	28,868
Income (loss) before taxes from continuing operations	$ 82,757	$ 72,178	$ 33,810