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Supplemental Financial Information (Details - Other liabilities) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued variable consideration	$ 1,347	$ 1,462
Customer deposits and refunds	1,133	628
Accrued raw materials purchases	176	272
Deferred revenue	850	658
Lease liability	1,174	1,273
Taxes payable	388	395
Warranty reserve	197	181
Accrued operating expenses	2,063	1,439
Total other current liabilities	7,328	6,308
Non-current
Lease liability	1,155	1,796
Deferred revenue	241	166
Total other non-current liabilities	$ 1,396	$ 1,962

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