GOODWILL AND OTHER INTANGIBLES - Narrative (Details)	3 Months Ended
Dec. 31, 2020 USD ($)	Sep. 30, 2020 reporting_unit	Dec. 31, 2019 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Carry amount of intangible assets related to foreign currency translation	$ 3,700,000
Amortization expense	2,378,000		$ 2,393,000
Estimated amortization expense, remainder of 2021	7,007,000
Estimated amortization expense, fiscal 2022	9,376,000
Estimated amortization expense, fiscal 2023	9,224,000
Estimated amortization expense, fiscal 2024	9,198,000
Estimated amortization expense, fiscal 2025	9,198,000
Estimated amortization expense, fiscal 2026	9,198,000
Estimated amortization expense, thereafter	77,122,000
Number of reporting units for goodwill impairment testing \| reporting_unit		3
Goodwill impairment	0
Indefinite-lived intangible asset (excluding goodwill) impairment	$ 0

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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