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Long-Term Debt and Convertible Notes - Additional Information (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
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Aug. 12, 2025 | Aug. 08, 2025 | Feb. 13, 2025 | Aug. 15, 2023 | Aug. 09, 2023 | May 31, 2021 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of debt issuance costs |  |  |  |  |  |  |  |  | $ 108,000 | $ 157,000
Long-term debt, description |  |  |  |  | The Initial Working Capital Facility Agreement had a term of four years, with a springing maturity date that was 91 days prior to the stated maturity of our 2026 Convertible Notes (as defined below), if still outstanding at such time. |  |  |  |  |
Loan agreement, term |  |  |  |  | 4 years |  |  |  |  |
Loan agreement spring maturity date |  |  |  |  | 91 days |  |  |  |  |
Debt instrument, interest rate |  |  |  | 9.95% |  |  |  |  |  |
Accrued paid-in-kind fixed interest rate |  |  |  | 1.50% |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | $ 11,339,000 |  | 11,339,000 |
Amortization of debt discount |  |  |  |  |  |  |  |  | 505,000 | 504,000
Other Non-current Liabilities |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Term fee accreted |  |  |  |  |  |  | 4,700,000 |  | $ 4,700,000 |
Common Stock | Exchange Agreement |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt conversion, converted instrument, shares issued |  | 16,666,666 |  |  |  |  |  |  |  |
Tranche 1A | Warrant |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of principal amount of loan funded to lender |  |  |  |  | 2.00% |  |  |  |  |
Hercules Capital Inc |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement | $ 300,000 | $ 150,000,000 |  | $ 50,000,000 |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | $ 5,500,000 |  |  |
Debt issuance costs incurred |  | $ 3,500,000 |  |  |  |  |  |  |  |
Effective interest rate |  |  |  |  |  |  | 11.60% |  | 11.60% |
Interest expense |  |  |  |  |  |  | $ 2,200,000 | $ 900,000 | $ 4,000,000 | 2,700,000
Interest expense, debt, excluding amortization |  |  |  |  |  |  | 1,700,000 | 600,000 | 3,000,000 | 1,900,000
Paid-in-kind interest amount |  |  |  |  |  |  | 200,000 | 100,000 | 400,000 | 300,000
Paid-in-kind interest amount |  |  |  |  |  |  |  |  | 100,000 |
Amortization of debt discount |  |  |  |  |  |  | 200,000 | 200,000 | 600,000 | 500,000
Common stock exercise price, per share |  |  |  |  | $ 1.68 |  |  |  |  |
Debt instrument, maturity date, description |  |  | On February 13, 2025, we entered into an amendment to the Initial Working Capital Facility Agreement (the “First Amendment to the Working Capital Facility Agreement”) to extend the maturity date to the earlier of (a) September 1, 2027 and (b) to the extent that any of the 2026 Convertible Notes remain outstanding on such date, (i) May 12, 2026 or (ii) in the event that the maturity date of any 2026 Convertible Notes is extended, prior to May 12, 2026, to August 11, 2026, or later, the date that is 91 days prior to the maturity date of such further extended 2026 Convertible Notes. |  |  |  |  |  |  |
Debt instrument, maturity date |  |  | Sep. 01, 2027 |  |  |  |  |  |  |
Debt instrument maturity date |  |  | May 12, 2026 |  |  |  |  |  |  |
Debt instrument, maturity date |  | Sep. 01, 2030 |  |  |  |  |  |  |  |
Carrying value of debt |  |  |  |  |  |  | 107,500,000 |  | 107,500,000 |
Payment for facility charge | 1,100,000 |  |  |  |  |  |  |  |  |
Debt instrument, term fee |  | $ 3,900,000 |  |  | $ 200,000 |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | 110,800,000 |  | 110,800,000 |
Debt issuance costs |  |  |  |  |  |  | 3,400,000 |  | 3,400,000 |
Adjustment of interest rate to prime, percentage |  | 7.50% |  |  |  |  |  |  |  |
Cash interest percentage |  | 1.95% |  |  |  |  |  |  |  |
Paid-in-kind interest percentage |  | 1.00% |  |  |  |  |  |  |  |
Upfront facility charge payment percentage |  | 1.00% |  |  |  |  |  |  |  |
Hercules Capital Inc | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
End of term charge percentage |  | 6.25% |  |  |  |  |  |  |  |
Hercules Capital Inc | Maximum | Common Stock |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares warrant issued to lender |  |  |  |  | 297,619 |  |  |  |  |
Hercules Capital Inc | Tranche 1A |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement |  |  |  | 25,000,000 |  |  |  |  |  |
Hercules Capital Inc | Tranche 1B |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement |  |  |  | 5,000,000 |  |  |  |  |  |
Hercules Capital Inc | Tranche 1C |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement |  |  |  | $ 20,000,000 |  |  |  |  |  |
Hercules Capital Inc | Tranche 1 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement | 110,000,000 | $ 110,000,000 |  |  |  |  |  |  |  |
Debt instrument capitalized paid-in-kind interest | $ 800,000 |  |  |  |  |  |  |  |  |
Accrued and unpaid interest |  | 700,000 |  |  |  |  |  |  |  |
Hercules Capital Inc | Tranche 2 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement |  | 20,000,000 |  |  |  |  |  |  |  |
Hercules Capital Inc | Tranche 3 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement |  | 20,000,000 |  |  |  |  |  |  |  |
2026 Senior Convertible Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Amortization of debt issuance costs |  |  |  |  |  |  | 0 | 100,000 | 100,000 | 200,000
Debt instrument, interest rate |  |  |  |  |  | 1.50% |  |  |  |
Convertible debt issuable in connection with private placement |  | 150,000,000 |  |  |  | $ 150,000,000 | 0 |  | 0 |
Loss on extinguishment of debt |  |  |  |  |  |  | $ 5,800,000 |  |  |
Debt issuance costs incurred |  |  |  |  |  |  |  |  | $ 1,000,000 |
Effective interest rate |  |  |  |  |  |  | 1.60% |  | 1.60% |
Interest expense |  |  |  |  |  |  | $ 400,000 | 600,000 | $ 1,600,000 | 1,800,000
Interest expense, debt, excluding amortization |  |  |  |  |  |  | $ 400,000 | $ 500,000 | 1,500,000 | $ 1,600,000
Debt instrument fair value exchange for cash consideration |  | 125,000,000 |  |  |  |  |  |  |  |
Net proceeds from convertible notes financing |  |  |  |  |  | $ 149,000,000 |  |  |  |
Debt instrument, maturity date |  |  |  |  |  | May 26, 2026 |  |  |  |
Debt instrument, frequency of periodic payment |  |  |  |  |  | semi-annually |  |  |  |
Debt Instrument remaining outstanding |  | 125,000,000 |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Amount |  | 25,000,000 |  |  |  |  |  |  |  |
2026 Senior Convertible Notes | Common Stock |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument fair value exchange for stock |  | $ 30,700,000 |  |  |  |  |  |  |  |
2031 Senior Convertible Notes | Rubric Capital Management LP |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  | 5.00% |  |  |  |  |  |  |  |
Convertible debt issuable in connection with private placement |  | $ 35,000,000 |  |  |  |  |  |  |  |
Debt issuance costs incurred |  |  |  |  |  |  |  |  | $ 1,400,000 |
Effective interest rate |  |  |  |  |  |  | 7.16% |  | 7.16% |
Interest expense |  |  |  |  |  |  | $ 300,000 |  | $ 300,000 |
Paid-in-kind interest amount |  |  |  |  |  |  | 300,000 |  | 300,000 |
Amortization of debt discount |  |  |  |  |  |  | 0 |  | 0 |
Issuance discount |  |  |  |  |  |  | 1,750,000 |  | 1,750,000 |
Net proceeds from convertible notes financing |  | $ 31,900,000 |  |  |  |  |  |  |  |
Debt instrument, maturity date |  | Mar. 01, 2031 |  |  |  |  |  |  |  |
Debt instrument, frequency of periodic payment |  | semi-annually |  |  |  |  |  |  |  |
Debt instrument, redemption period, stock price exceeds in percentage of conversion price |  | 200.00% |  |  |  |  |  |  |  |
Initial conversion price/rate |  | $ 555.5556 |  |  |  |  |  |  |  |
Debt instrument conversion ratio multiple of principal |  | $ 1,000 |  |  |  |  |  |  |  |
Common shares registered for resale in connection with convertible notes |  | 19,444,444 |  |  |  |  |  |  |  |
Carrying value of debt |  |  |  |  |  |  | 32,200,000 |  | 32,200,000 |
Debt instrument, face amount |  |  |  |  |  |  | 35,000,000 |  | 35,000,000 |
Debt issuance costs |  |  |  |  |  |  | $ 3,100,000 |  | $ 3,100,000 |
Paid-in-kind interest percentage |  | 7.00% |  |  |  |  |  |  |  |
2031 Senior Convertible Notes | Rubric Capital Management LP | Common Stock |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Initial conversion price/rate |  | $ 1.8 |  |  |  |  |  |  |  |
2031 Senior Convertible Notes | Rubric Capital Management LP | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stock conversion percentage |  | 19.99% |  |  |  |  |  |  |  |

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