v3.24.0.1

Basis of Presentation (Narrative) (Details) |  |  |  |  |  |  |  | 6 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 07, 2023 USD ($) shares | Dec. 05, 2023 shares | Nov. 27, 2023 | Oct. 01, 2023 USD ($) shares | Nov. 03, 2022 position | Oct. 07, 2022 | Sep. 22, 2022 | Dec. 31, 2023 USD ($) $ / shares shares | Feb. 09, 2024 USD ($) | Sep. 30, 2023 $ / shares | Jun. 30, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($) | Nov. 30, 2022 ft² | Jun. 30, 2022 USD ($) | Nov. 01, 2021 USD ($)
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of workforce reduction |  |  |  |  | 60.00% |  |  |  |  |  |  |  |  |  |
Number of positions reduced | position |  |  |  |  | 69 |  |  |  |  |  |  |  |  |  |
Operations ceased, area of land | ft² |  |  |  |  |  |  |  |  |  |  |  |  | 130,000 |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 0.001 |  |  | $ 0.001 |  |  |  |
Gross proceeds | $ 4,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash, cash equivalents and restricted cash |  |  |  |  |  |  |  | $ 4,060,000 |  |  | $ 7,579,000 | $ 3,949,000 |  | $ 28,672,000 |
Restricted Cash |  |  |  |  |  |  |  | 1,300,000 |  |  |  |  |  |  |
Restricted cash, current |  |  |  |  |  |  |  | $ 1,057,000 |  |  | 3,025,000 |  |  |  |
Reverse stock split, shares received per share tendered |  |  | 0.05 |  |  | 0.04 | 0.04 |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash, cash equivalents and restricted cash |  |  |  |  |  |  |  |  | $ 3,400,000 |  |  |  |  |  |
Restricted cash, current |  |  |  |  |  |  |  |  | $ 1,100,000 |  |  |  |  |  |
At-The-Market Offerings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares sold | shares |  |  |  |  |  |  |  | 170,989 |  |  |  |  |  |  |
Proceeds from offering |  |  |  |  |  |  |  | $ 1,700,000 |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |
Lincoln Park Purchase Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares sold | shares |  |  |  | 21,457 |  |  |  | 181,141 |  |  |  |  |  |  |
Proceeds from offering |  |  |  | $ 100,000 |  |  |  | $ 1,200,000 |  |  |  |  |  |  |
Offering 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares sold | shares | 600,000 | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Offering 2023 | Pre Funded Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants issued | shares | 1,650,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase shares of Common Stock | shares | 1,650,000 | 1,650,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Offering 2023 | Series C Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants issued | shares | 2,250,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase shares of Common Stock | shares | 2,250,000 | 2,250,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Offering 2023 | Series D Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants issued | shares | 2,250,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase shares of Common Stock | shares | 2,250,000 | 2,250,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured term loan |  |  |  |  |  |  |  |  |  |  | 13,057,000 |  |  |  | $ 22,375,000
Debt balance outstanding |  |  |  |  |  |  |  | $ 12,655,000 |  |  | $ 12,937,000 |  |  |  |

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