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GOODWILL AND INTANGIBLE ASSETS - Schedule of Changes in Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2020
Goodwill [Roll Forward]    
Beginning balance   $ 82,786
Additions   1,200
Impairment $ (38,300) (38,333)
Ending balance $ 45,653 $ 45,653