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Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands | Preferred Stock [Member] Conversion of Series B Preferred Stock to Common Stock [Member] | Preferred Stock [Member] Conversion of Series C Preferred Stock to Common Stock [Member] | Preferred Stock [Member] Employees and Directors [Member] | Preferred Stock [Member] Director [Member] | Preferred Stock [Member] Series B Preferred Stock [Member] | Preferred Stock [Member] Series C Preferred Stock [Member] | Preferred Stock [Member] The 2022 Warrant Reprice Transaction [Member] | Preferred Stock [Member] May 2023 Warrants [Member] | Preferred Stock [Member] The December 2023 Warrants [Member] | Preferred Stock [Member] March 2024 Warrant [Member] | Preferred Stock [Member] | Common Stock [Member] Conversion of Series B Preferred Stock to Common Stock [Member] | Common Stock [Member] Conversion of Series C Preferred Stock to Common Stock [Member] | Common Stock [Member] Employees and Directors [Member] | Common Stock [Member] Director [Member] | Common Stock [Member] Series B Preferred Stock [Member] | [1] | Common Stock [Member] Series C Preferred Stock [Member] | [1] | Common Stock [Member] The 2022 Warrant Reprice Transaction [Member] | Common Stock [Member] May 2023 Warrants [Member] | [1] | Common Stock [Member] The December 2023 Warrants [Member] | Common Stock [Member] March 2024 Warrant [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] Conversion of Series B Preferred Stock to Common Stock [Member] | Additional Paid-in Capital [Member] Conversion of Series C Preferred Stock to Common Stock [Member] | Additional Paid-in Capital [Member] Employees and Directors [Member] | Additional Paid-in Capital [Member] Director [Member] | Additional Paid-in Capital [Member] Series B Preferred Stock [Member] | [1] | Additional Paid-in Capital [Member] Series C Preferred Stock [Member] | [1] | Additional Paid-in Capital [Member] The 2022 Warrant Reprice Transaction [Member] | Additional Paid-in Capital [Member] May 2023 Warrants [Member] | [1] | Additional Paid-in Capital [Member] The December 2023 Warrants [Member] | Additional Paid-in Capital [Member] March 2024 Warrant [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] Conversion of Series B Preferred Stock to Common Stock [Member] | Retained Earnings [Member] Conversion of Series C Preferred Stock to Common Stock [Member] | Retained Earnings [Member] Employees and Directors [Member] | Retained Earnings [Member] Director [Member] | Retained Earnings [Member] Series B Preferred Stock [Member] | Retained Earnings [Member] Series C Preferred Stock [Member] | Retained Earnings [Member] The 2022 Warrant Reprice Transaction [Member] | Retained Earnings [Member] May 2023 Warrants [Member] | Retained Earnings [Member] The December 2023 Warrants [Member] | Retained Earnings [Member] March 2024 Warrant [Member] | Retained Earnings [Member] | Conversion of Series B Preferred Stock to Common Stock [Member] | Conversion of Series C Preferred Stock to Common Stock [Member] | Employees and Directors [Member] | Director [Member] | Series B Preferred Stock [Member] | Series C Preferred Stock [Member] | The 2022 Warrant Reprice Transaction [Member] | May 2023 Warrants [Member] | The December 2023 Warrants [Member] | March 2024 Warrant [Member] | Total
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Balance (in shares) at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  | 14,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 58,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,554,000
Balance at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  | $ 2,973 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 | [1] |  |  |  |  |  |  |  |  |  |  | $ 165,732 | [1] |  |  |  |  |  |  |  |  |  |  | $ (158,152)
Net loss |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [1] |  |  |  |  |  |  |  |  |  |  | (1,739) |  |  |  |  |  |  |  |  |  |  |  | (1,739)
Stock-based compensation expense related to employee and director stock awards |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 75 | [1] |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  | $ 75 |  |  |  |  |  |  |  |
Balance (in shares) at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  | 14,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 58,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  | $ 2,973 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 165,807 | [1] |  |  |  |  |  |  |  |  |  |  | (159,891) |  |  |  |  |  |  |  |  |  |  |  | $ 8,890
Balance (in shares) at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  | 14,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 58,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,554,000
Balance at Dec. 31, 2022 |  |  |  |  |  |  |  |  |  |  | $ 2,973 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | [1] |  |  |  |  |  |  |  |  |  |  | 165,732 | [1] |  |  |  |  |  |  |  |  |  |  | $ (158,152)
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (5,532)
Conversion of Preferred Stock to common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 995
Balance (in shares) at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  | 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 186,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  | $ 1,977 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170,738 | [1] |  |  |  |  |  |  |  |  |  |  | (165,680) |  |  |  |  |  |  |  |  |  |  |  | 7,037
Balance (in shares) at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  | 14,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 58,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Mar. 31, 2023 |  |  |  |  |  |  |  |  |  |  | $ 2,973 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 165,807 | [1] |  |  |  |  |  |  |  |  |  |  | (159,891) |  |  |  |  |  |  |  |  |  |  |  | 8,890
Net loss |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [1] |  |  |  |  |  |  |  |  |  |  | (2,036) |  |  |  |  |  |  |  |  |  |  |  | (2,036)
Conversion of Preferred Stock to common stock (in shares) | 3,000 | 1,000 |  |  |  |  |  |  |  |  |  | (54,000) | [1] | (8,000) | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock | $ (121) | $ (728) |  |  |  |  |  |  |  |  |  | $ 0 | [1] | $ 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  | $ 121 | [1] | $ 728 | [1] |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |
Adjustment of Series C Preferred Stock conversion price |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,802 | $ 194 |  |  |  |  |  |  |  |  |  |  | $ (1,802) | $ (194) |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |
Stock-based compensation expense related to employee and director stock awards |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 64 | [1] |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 64 |  |  |  |  |  |  |  |
Vesting of director restricted stock awards (in shares) |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of director restricted stock awards |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | [1] |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock (in shares) | (3,000) | (1,000) |  |  |  |  |  |  |  |  |  | 54,000 | [1] | 8,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Modification of common stock warrants |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 285 | [1] |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 285
Reclassification of May 2023 Warrants |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,360 |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  | $ 1,360 |  |  |
Balance (in shares) at Jun. 30, 2023 |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 120,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Jun. 30, 2023 |  |  |  |  |  |  |  |  |  |  | $ 2,124 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170,361 | [1] |  |  |  |  |  |  |  |  |  |  | (163,923) |  |  |  |  |  |  |  |  |  |  |  | 8,563
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,757) |  |  |  |  |  |  |  |  |  |  |  | (1,757)
Conversion of Preferred Stock to common stock (in shares) |  |  |  |  |  |  |  |  |  |  | (3,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 66 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock |  |  |  |  |  |  |  |  |  |  | $ (147) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 146 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense related to employee and director stock awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 62 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 62
Reclassification of embedded derivative liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 169 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 169
Conversion of Preferred Stock to common stock (in shares) |  |  |  |  |  |  |  |  |  |  | 3,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (66) | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  | 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 186,000 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2023 |  |  |  |  |  |  |  |  |  |  | $ 1,977 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2 | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170,738 | [1] |  |  |  |  |  |  |  |  |  |  | (165,680) |  |  |  |  |  |  |  |  |  |  |  | 7,037
Balance (in shares) at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  | 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 321,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  | $ 1,950 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 176,210 |  |  |  |  |  |  |  |  |  |  |  | (174,849) |  |  |  |  |  |  |  |  |  |  |  | 3,314
Net loss |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | (3,214) |  |  |  |  |  |  |  |  |  |  |  | (3,214)
Conversion of Preferred Stock to common stock (in shares) | (5,000) | 0 |  |  |  |  |  |  |  |  |  | 537,000 |  | 57,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock | $ (231) | $ (234) |  |  |  |  |  |  |  |  |  | $ 5 |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  | 226 |  | 233 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |
Adjustment of Series C Preferred Stock conversion price |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 380 |  |  |  |  |  |  |  |  |  |  |  | (380) |  |  |  |  |  |  |  |  |  |  |  | 0
Stock-based compensation expense related to employee and director stock awards |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 60 |  |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock (in shares) | 5,000 | 0 |  |  |  |  |  |  |  |  |  | (537,000) |  | (57,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  | 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 915,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  | $ 1,485 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 177,109 |  |  |  |  |  |  |  |  |  |  |  | (178,443) |  |  |  |  |  |  |  |  |  |  |  | 160
Balance (in shares) at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  | 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 321,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2023 |  |  |  |  |  |  |  |  |  |  | $ 1,950 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 176,210 |  |  |  |  |  |  |  |  |  |  |  | (174,849) |  |  |  |  |  |  |  |  |  |  |  | 3,314
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,011)
Conversion of Preferred Stock to common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,944
Balance (in shares) at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,885,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  | $ 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 49 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 183,262 |  |  |  |  |  |  |  |  |  |  |  | (182,245) |  |  |  |  |  |  |  |  |  |  |  | 1,072
Balance (in shares) at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  | 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 915,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  | $ 1,485 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 177,109 |  |  |  |  |  |  |  |  |  |  |  | (178,443) |  |  |  |  |  |  |  |  |  |  |  | 160
Net loss |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | (1,585) |  |  |  |  |  |  |  |  |  |  |  | (1,585)
Conversion of Preferred Stock to common stock (in shares) | 0 | (1,000) |  |  |  |  |  |  |  |  |  | 88,000 |  | 148,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock | $ (37) | $ (1,442) |  |  |  |  |  |  |  |  |  | $ 1 |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 36 |  | $ 1,441 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |
Stock-based compensation expense related to employee and director stock awards |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  | $ 55 |  |  |  |  |  |  |  |
Modification of common stock warrants in connection with 2024 Warrant Reprice Transaction |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 69 |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  | $ 69 |  |  |  |
Issuance of common stock in connection with 2024 Warrant Reprice Transaction, net of offering costs (in shares) |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with 2024 Warrant Reprice Transaction, net of offering costs |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 129 |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 130
Reclassification of Warrants from liability |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 212 | $ 100 |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  | $ 212 | $ 100 |
Reclassification of embedded derivative liability |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 242 |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 242
Shares issued for 35:1 reverse stock split due to rounding feature (in shares) |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 107,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued for 35:1 reverse stock split due to rounding feature |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1) |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 0
Vesting of director restricted stock awards (in shares) |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of director restricted stock awards |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Conversion of Preferred Stock to common stock (in shares) | 0 | 1,000 |  |  |  |  |  |  |  |  |  | (88,000) |  | (148,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Jun. 30, 2024 |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,348,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Jun. 30, 2024 |  |  |  |  |  |  |  |  |  |  | $ 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 179,392 |  |  |  |  |  |  |  |  |  |  |  | (180,028) |  |  |  |  |  |  |  |  |  |  |  | (617)
Net loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,212) |  |  |  |  |  |  |  |  |  |  |  | (1,212)
Stock-based compensation expense related to employee and director stock awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22
Modification of common stock warrants in connection with 2024 Warrant Reprice Transaction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,005 |  |  |  |  |  |  |  |  |  |  |  | (1,005) |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with 2024 Warrant Reprice Transaction, net of offering costs (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,042,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock in connection with 2024 Warrant Reprice Transaction, net of offering costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21
Issuance of common stock and pre-funded warrants in an underwritten registered direct offering, net of issuance cost (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,495,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock and pre-funded warrants in an underwritten registered direct offering, net of issuance cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,843 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,858
Balance (in shares) at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,885,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Sep. 30, 2024 |  |  |  |  |  |  |  |  |  |  | $ 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 49 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 183,262 |  |  |  |  |  |  |  |  |  |  |  | $ (182,245) |  |  |  |  |  |  |  |  |  |  |  | $ 1,072
[1] | After giving retroactive effect to the 1-for-35 Reverse Stock Split that became effective May 30, 2024.

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