SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Goodwill, Other Identifiable Intangible Assets and Impairment of Long-lived Assets (Details) - USD ($)	12 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Intangible Assets [Abstract]
Goodwill impairment loss	$ 0	$ 0	$ 0
Inventory [Line Items]
Inventory write-offs	131,000	29,000	55,000
Maximum
Inventory [Line Items]
Inventory write-offs	$ 100,000	$ 100,000	$ 100,000

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Balance Type:	debit
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