BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($)	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 18,351,000	$ 7,247,000
Equipment upon delivery \| Point in time
Disaggregation of Revenue [Line Items]
Total revenues	18,063,000	7,093,000
Installation \| Point in time
Disaggregation of Revenue [Line Items]
Total revenues	288,000	154,000
Software and services
Disaggregation of Revenue [Line Items]
Total revenues	$ 0	$ 0

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details