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Stockholders' Equity - Summary of Common Stock Warrant Activity (Details) - Warrants - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Jun. 30, 2020
Class Of Stock [Line Items] |  |
Shares, Outstanding June 30, 2020 | 85,913 |
Shares, Warrants issued | 813,000 |
Shares, Outstanding December 31, 2020 | 899,484 | 85,913
Weighted Average Exercise Price, Outstanding June 30, 2020 | $ 5.14 |
Weighted Average Exercise Price, Warrants Issued | 3.08 |
Weighted Average Exercise Price, Outstanding March 31, 2021 | $ 3.28 | $ 5.14
Aggregate Fair Market Value at Issuance, Outstanding June 30, 2020 | $ 194 |
Aggregate Fair Market Value at Issuance, Warrants Issued | 1,758 |
Aggregate Fair Market Value at Issuance, Outstanding March 31, 2020 | $ 1,952 | $ 194
Weighted Average Remaining Contractual Term (Years), Outstanding | 4 years 6 months 25 days | 4 years 8 months 26 days
Warrants issued | 4 years 5 months 1 day |

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