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Stockholders' Equity - Summary of Common Stock Warrant Activity (Details) - Warrants - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Class Of Stock [Line Items] |  |
Shares, Outstanding | 86,000 |
Shares, Warrants issued | 2,307,000 | 86,000
Shares, Outstanding | 2,393,000 | 86,000
Weighted Average Exercise Price, Outstanding | $ 5.14 |
Weighted Average Exercise Price, Warrants Issued | 2.40 | $ 5.14
Weighted Average Exercise Price, Outstanding | $ 2.32 | $ 5.14
Aggregate Fair Market Value at Issuance, Outstanding | $ 194 |
Aggregate Fair Market Value at Issuance, Warrants Issued | 3,553 | $ 194
Aggregate Fair Market Value at Issuance, Outstanding | $ 3,747 | $ 194
Weighted Average Remaining Contractual Life (In years), Outstanding | 4 years 5 months 8 days | 4 years 8 months 26 days
Weighted Average Remaining Contractual Life (In years), Warrants Issued | 4 years 5 months 19 days | 4 years 8 months 26 days

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