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Stockholders' Equity - Schedule of Warrants Outstanding (Details) - $ / shares | Apr. 12, 2021 | Feb. 16, 2021 | Oct. 28, 2020 | Oct. 23, 2020 | Mar. 30, 2020 | Mar. 26, 2020 | Jun. 30, 2021 | Jun. 30, 2020
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Warrants issued on March 26, 2020 |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Issue Date |  |  |  |  |  | Mar. 26, 2020 |  |
Classification |  |  |  |  |  | Equity |  |
Exercise Price |  |  |  |  |  | $ 6.25 |  |
Expiration Date |  |  |  |  |  | Mar. 25, 2025 |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 25,000 | 25,000
Warrants issued on March 30, 2020 |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Issue Date |  |  |  |  | Mar. 30, 2020 |  |  |
Classification |  |  |  |  | Equity |  |  |
Exercise Price |  |  |  |  | $ 4.6875 |  |  |
Expiration Date |  |  |  |  | Mar. 27, 2025 |  |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 61,000 | 61,000
Warrants issued on October 23, 2020 |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Issue Date |  |  |  | Oct. 23, 2020 |  |  |  |
Classification |  |  |  | Equity |  |  |  |
Exercise Price |  |  |  | $ 2.88 |  |  |  |
Expiration Date |  |  |  | Oct. 21, 2025 |  |  |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 470,000 |
Warrants issued on October 28, 2020 |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Issue Date |  |  | Oct. 28, 2020 |  |  |  |  |
Classification |  |  | Equity |  |  |  |  |
Exercise Price |  |  | $ 2.6875 |  |  |  |  |
Expiration Date |  |  | Oct. 28, 2025 |  |  |  |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 173,000 |
Warrants issued on February 16, 2021 |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Issue Date |  | Feb. 16, 2021 |  |  |  |  |  |
Classification |  | Equity |  |  |  |  |  |
Exercise Price |  | $ 4.06 |  |  |  |  |  |
Expiration Date |  | Feb. 11, 2026 |  |  |  |  |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 171,000 |
Warrants issued on April 12, 2021 |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Issue Date | Apr. 12, 2021 |  |  |  |  |  |  |
Classification | Equity |  |  |  |  |  |  |
Exercise Price | $ 1.875 |  |  |  |  |  |  |
Expiration Date | Apr. 07, 2026 |  |  |  |  |  |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 1,493,000 |
Warrants |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Number of Shares Underlying Warrants |  |  |  |  |  |  | 2,393,000 | 86,000

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