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Other Current Assets - Schedule of Other Current Assets (Details) - USD ($) | Jun. 30, 2021 | Jun. 30, 2020
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Other Assets [Abstract] |  |
Prepaid insurance | $ 249,000 | $ 160,000
Prepaid inventory | 73,000 | 32,000
Prepaid offering costs |  | 547,000
Prepaid expenses | 95,000 | 48,000
Total other current assets | $ 417,000 | $ 787,000

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