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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