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FINANCE RECEIVABLES - Summary of Finance receivables Fiscal Years (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for nonperforming receivables	$ (559)	$ (150)
Total finance receivables	17,741	18,681
Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
2021	8,563
2022	5,607
2023	4,447
2024	2,675
2025	1,126
Thereafter	44
Total amounts to be collected	22,462
Less: interest	(3,603)
Total finance receivables	18,300
Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for nonperforming receivables	$ (559)	$ (150)	$ (607)	$ (606)