Borrowings - Narrative (Details)
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3 Months Ended |
5 Months Ended |
9 Months Ended |
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Jun. 30, 2025
USD ($)
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Jan. 31, 2025
USD ($)
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Dec. 31, 2024
USD ($)
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Nov. 01, 2024
USD ($)
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Oct. 31, 2024
USD ($)
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Aug. 31, 2024
USD ($)
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Aug. 29, 2024
USD ($)
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Jun. 21, 2024
USD ($)
tranche
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Jul. 29, 2022
USD ($)
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Sep. 30, 2024
USD ($)
$ / shares
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Sep. 30, 2023
USD ($)
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Apr. 30, 2023
USD ($)
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Sep. 30, 2024
USD ($)
$ / shares
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Sep. 30, 2023
USD ($)
shares
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Dec. 31, 2023
USD ($)
$ / shares
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Jan. 31, 2023
USD ($)
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Jan. 18, 2023
USD ($)
$ / shares
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Sep. 30, 2021
USD ($)
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Jul. 06, 2021
USD ($)
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| Debt Instrument [Line Items] |
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| Proceeds from issuance of secured debt |
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$ 98,575,000
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$ 0
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| Loss on fair value of loans |
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$ (3,036,000)
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$ 0
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(3,276,000)
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0
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| Change in fair value of debt - credit risk |
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4,642,000
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0
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4,642,000
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0
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| Interest payable |
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$ 3,097,000
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$ 3,097,000
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$ 0
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| Common stock, par value (in dollars per share) | $ / shares |
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$ 0.0001
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$ 0.0001
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$ 0.0001
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| Long-term debt, current |
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$ 2,536,000
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$ 2,536,000
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$ 3,332,000
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| Proceeds from issuance of convertible notes - related party |
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0
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48,050,000
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| Gain (loss) on debt extinguishment |
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0
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0
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68,478,000
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(3,510,000)
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| Principal |
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250,919,000
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250,919,000
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238,962,000
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| Delayed Draw Term Loan | Secured Debt |
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| Debt Instrument [Line Items] |
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| Principal |
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$ 210,500,000
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| Proceeds from issuance of secured debt |
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$ 30,000,000
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$ 30,000,000
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75,000,000
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| Proceeds from issuance of unsecured debt, net of original issue discount |
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$ 28,500,000
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$ 71,250,000
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| Stated interest rate |
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15.00%
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| Percentage of additional debt instrument, interest rate |
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5.00%
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| Percentage of original issue discount |
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5.00%
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5.00%
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| Percentage of debt exit fee |
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5.00%
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| Restricted cash minimum liquidity requirement amount |
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2,500,000
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2,500,000
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| Restricted cash minimum liquidity requirement amount, after first tranche funding |
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5,000,000
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| Restricted cash minimum liquidity requirement increases |
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15,000,000
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15,000,000
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| Maturity period |
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5 years
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| Number of days prior to current maturity date |
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91 days
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| Percentage of debt milestones penalty |
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4.00%
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| Percentage of debt milestones penalty, net |
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16.00%
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| Debt instrument, milestones penalty percentage |
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45.00%
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| Percentage of credit agreement |
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33.00%
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| Debt instrument, writ or warrant excess amount |
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$ 2,500,000
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| Fair value of loans |
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$ 12,528,000
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$ 25,653,000
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46,099,000
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46,099,000
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| Loss on fair value of loans |
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(3,036,000)
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(3,276,000)
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| Principal |
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108,626,000
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108,626,000
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0
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| Delayed Draw Term Loan | Secured Debt | Subsequent event |
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| Debt Instrument [Line Items] |
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| Proceeds from issuance of secured debt |
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$ 65,000,000
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$ 65,000,000
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| Delayed Draw Term Loan | Secured Debt | Minimum |
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| Debt Instrument [Line Items] |
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| Percentage of additional debt instrument, interest rate |
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1.00%
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| Credit agreement approval term |
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90 days
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| Delayed Draw Term Loan | Secured Debt | Maximum |
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| Debt Instrument [Line Items] |
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| Percentage of additional debt instrument, interest rate |
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5.00%
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| Credit agreement approval term |
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240 days
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| Delayed Draw Term Loan | Secured Debt | Forecast |
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| Debt Instrument [Line Items] |
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| Proceeds from issuance of secured debt |
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$ 40,500,000
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| Delayed Draw Term Loan (DDTL), Additional Funding | Secured Debt |
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| Debt Instrument [Line Items] |
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| Number of remaining tranches | tranche |
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2
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| 2021 Convertible Note Payable | Convertible Notes |
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| Debt Instrument [Line Items] |
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| Principal |
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$ 100,000,000
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| Interest payable |
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1,789,000
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0
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1,789,000
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0
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| Interest incurred and included in principal amount |
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3,474,000
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3,275,000
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| Embedded conversion feature |
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388,000
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388,000
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78,000
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| Non-cash interest expense - related party |
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3,667,000
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3,183,000
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10,563,000
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9,153,000
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| Amortization of debt discount |
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1,713,000
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1,365,000
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4,832,000
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3,822,000
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| Principal |
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119,289,000
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119,289,000
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115,815,000
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| AFG Convertible Notes | Related Party |
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| Debt Instrument [Line Items] |
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| Fair value of loans |
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$ 16,623,000
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| Interest payable |
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1,308,000
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1,308,000
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0
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| Interest incurred and included in principal amount |
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2,309,000
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1,640,000
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| Non-cash interest expense - related party |
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2,873,000
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| AFG Convertible Notes | Convertible Notes |
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| Debt Instrument [Line Items] |
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| Common stock, par value (in dollars per share) | $ / shares |
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$ 0.0001
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| Conversion price per unit (in dollars per share) | $ / shares |
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$ 1.67
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| AFG Convertible Notes | Convertible Notes | Related Party |
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| Debt Instrument [Line Items] |
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| Principal |
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$ 13,750,000
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$ 13,750,000
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| Paid-in-kind interest rate |
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26.50%
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26.50%
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| Embedded conversion feature |
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17,621,000
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17,621,000
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4,345,000
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| Non-cash interest expense - related party |
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1,624,000
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1,266,000
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4,491,000
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3,364,000
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| Amortization of debt discount |
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246,000
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192,000
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682,000
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550,000
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| Principal |
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19,738,000
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19,738,000
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17,429,000
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| Senior Secured Term Loan | Minimum | SOFR |
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| Debt Instrument [Line Items] |
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| Variable rate spread |
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0.2616%
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| Senior Secured Term Loan | Minimum | NYFRB |
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| Debt Instrument [Line Items] |
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| Variable rate spread |
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0.50%
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| Senior Secured Term Loan | Secured Debt |
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| Debt Instrument [Line Items] |
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| Principal |
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|
$ 100,000,000
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| Number of days prior to current maturity date |
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91 days
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| Interest escrowed for loan |
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11,755,000
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| Principal |
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|
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|
0
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|
0
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|
100,000,000
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| Senior Secured Term Loan | Secured Debt | Atlas Credit Agreement |
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| Debt Instrument [Line Items] |
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| Principal |
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$ 100,000,000
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| Number of days prior to current maturity date |
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91 days
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| Interest escrowed for loan |
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|
$ 11,900,000
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| Debt instrument, participation lieu payments |
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1,000,000
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| Payment for debt extinguishment cost |
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8,000,000
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| Gain (loss) on restructuring of debt |
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|
$ 68,478,000
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| Senior Secured Term Loan | Secured Debt | Forecast | Insurer Letter Agreement |
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| Debt Instrument [Line Items] |
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| Payment for debt extinguishment cost |
$ 4,000,000
|
|
$ 3,000,000
|
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| Senior Secured Term Loan | SOFR Loans |
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| Debt Instrument [Line Items] |
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| Variable rate spread |
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|
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|
8.50%
|
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|
|
|
|
|
|
|
|
| Senior Secured Term Loan | ABR Loans |
|
|
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|
|
|
|
|
|
|
|
|
|
|
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|
|
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|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stated interest rate |
|
|
|
|
|
|
|
|
7.50%
|
|
|
|
|
|
|
|
|
|
|
| Equipment financing facility |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Non-cash interest expense - related party |
|
|
|
|
|
|
|
|
|
148,000
|
$ 265,000
|
|
535,000
|
874,000
|
|
|
|
|
|
| Long-term line of credit |
|
|
|
|
|
|
|
|
|
3,262,000
|
|
|
3,262,000
|
|
5,710,000
|
|
|
|
|
| Long-term debt, current |
|
|
|
|
|
|
|
|
|
2,536,000
|
|
|
2,536,000
|
|
3,332,000
|
|
|
|
|
| Equipment financing facility | Line of Credit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Line of credit facility borrowing capacity |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 25,000,000
|
|
| Principal |
|
|
|
|
|
|
|
|
|
$ 3,266,000
|
|
|
$ 3,266,000
|
|
5,718,000
|
|
|
|
|
| Yorkville Convertible Promissory Note | Convertible Notes | Related Party |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from issuance of convertible notes - related party |
|
|
|
|
|
|
|
|
|
|
|
$ 37,000,000
|
|
|
|
|
|
|
|
| Amortization of debt discount |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 17,572,000
|
|
|
|
|
|
| Converted instrument, shares issued (in shares) | shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
22,947,029
|
|
|
|
|
|
| Gain (loss) on debt extinguishment |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ (3,510,000)
|
|
|
|
|
|
| Principal |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0
|
|
|
|
|
| Embedded Derivatives - Yorkville Convertible Promissory Notes | Convertible Notes | Related Party |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Amortization of debt discount |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ (6,922,000)
|
|
|
|
|
|