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Stockholders' Equity - Additional Information (Details) - USD ($) |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 07, 2021 | Feb. 11, 2021 | Dec. 18, 2020 | Oct. 28, 2020 | Oct. 21, 2020 | Jul. 23, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Sep. 11, 2021
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Common stock, par value |  |  |  |  |  |  | $ 0.001 | $ 0.001 |
Gross proceeds before deducting placement agent’s fees and related offering expenses | $ 37,300,000 |  |  |  |  |  |  |  |
Description of listing compliance |  |  |  |  |  |  | On September 11, 2020, the Company received a notice from the Listing Qualifications Department of the Nasdaq Stock Market LLC (“Nasdaq”) stating that it was not in compliance with the required stockholder’s equity of $2.5 million. |  |
Stockholder's equity |  |  |  |  |  |  | $ 61,207,000 | $ 625,000 | $ 2,500,000
Maximum |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Stockholder's equity |  |  |  |  |  |  |  | $ 2,500,000 |
Underwritten Public Offering |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common stock registered direct offering | 21,639,851 |  |  |  |  |  |  |  |
Common stock offering price per share | $ 1.50 |  |  |  |  |  |  |  |
Over-Allotment Option | Maximum |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common stock registered direct offering | 3,245,977 |  |  |  |  |  |  |  |
Placement Agent |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Common stock offering price per share | $ 1.395 |  |  |  |  |  |  |  |
Percentage of underwriting discount price per share | 7.00% |  |  |  |  |  |  |  |
Option to purchase for period from date of underwriting agreement | 30 days |  |  |  |  |  |  |  |
Second Purchase Agreement |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Common stock, par value |  | $ 0.001 |  |  | $ 0.001 |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common stock registered direct offering |  |  |  |  |  |  | 39,585,000 | 1,806,000 |
Common Stock | Second Purchase Agreement |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common stock registered direct offering |  | 2,845,535 |  | 2,887,906 | 7,826,086 |  |  |  |
Common stock offering price per share |  | $ 3.25 |  | $ 2.15 | $ 2.30 |  |  |  |
Gross proceeds before deducting placement agent’s fees and related offering expenses |  | $ 9,250,000 |  | $ 6,200,000 | $ 18,000,000 |  |  |  |
Common Stock | At-the-Market Offering Agreement |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Issuance of common stock registered direct offering |  |  | 1,139,323 |  |  |  |  |  |
Gross proceeds before deducting placement agent’s fees and related offering expenses |  |  | $ 3,600,000 |  |  |  |  |  |
Common Stock | At-the-Market Offering Agreement | Maximum |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Common stock issuable aggregate offering price |  |  | $ 3,582,614 |  |  |  |  |  |
Warrants |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Warrants issued |  |  |  |  |  |  | 2,393,000 | 86,000 |
Warrants | Placement Agent |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Warrants issued | 1,493,150 |  |  |  |  |  |  |  |
Percentage of shares sold in offering | 6.00% |  |  |  |  |  |  |  |
Exercise price of warrants | $ 1.875 |  |  |  |  |  |  |  |
Warrants maturity term | 5 years |  |  |  |  |  |  |  |
Warrants | Second Purchase Agreement | Placement Agent |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |
Warrants issued |  | 170,732 |  | 173,274 |  | 469,565 |  |  |
Percentage of shares sold in offering |  | 6.00% |  | 6.00% |  | 6.00% |  |  |
Exercise price of warrants |  | $ 4.0625 |  | $ 2.6875 |  | $ 2.875 |  |  |
Percentage of per share offering price of shares |  | 125.00% |  | 125.00% |  | 125.00% |  |  |
Warrants maturity date |  | Feb. 11, 2026 |  | Oct. 28, 2025 |  | Oct. 21, 2025 |  |  |
Fair value per share of warrants |  | $ 2.94 |  | $ 1.80 |  | $ 2.01 |  |  |

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