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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended | 17 Months Ended
--- | --- | --- | --- | ---
Mar. 27, 2020 | Mar. 25, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Mar. 25, 2020
Class Of Stock [Line Items] |  |  |  |  |
Net proceeds from sale of common stock |  |  | $ 5,650 | $ 5,908 |
Stockholders’ equity |  |  | 625 | $ 2,708 |
Maximum |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Stockholders’ equity |  |  | $ 2,500 |  |
Common Stock |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Issuance of common stock registered direct offering |  |  | 1,806,000 | 1,491,000 |
Common Stock | Market Issuance Sales Agreement |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Issuance of common stock registered direct offering |  |  |  |  | 793,668
Net proceeds from sale of common stock |  |  |  |  | $ 2,300
Average sale price per share |  |  |  |  | $ 3.04
Additional common stock shares sold |  | 0 |  |  |
Common Stock | Securities Purchase Agreement |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Issuance of common stock registered direct offering | 873,335 | 354,000 |  |  |
Net proceeds from sale of common stock | $ 2,900 | $ 1,600 |  |  |
Common stock offering price per share | $ 3.75 | $ 5.00 |  |  | 5.00
Common stock par value | $ 0.001 | $ 0.001 |  |  | $ 0.001
Gross proceeds before deducting agent’s fees and offering expenses | $ 3,275 | $ 1,770 |  |  |
Warrants |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Warrants issued |  |  | 85,913 |  |
Warrants | Securities Purchase Agreement |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Warrants issued | 61,133 | 24,780 |  |  | 24,780
Percentage of shares sold in offering | 7.00% | 7.00% |  |  |
Exercise price of warrants | $ 4.6875 | $ 6.25 |  |  | $ 6.25
Percentage of per share offering price of shares | 125.00% | 125.00% |  |  |
Warrants maturity date | Mar. 27, 2025 | Mar. 25, 2025 |  |  | Mar. 25, 2025
Warrants fair value per share | $ 2.22 | $ 2.35 |  |  |

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