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v3.25.2

Debt Obligations - Narrative (Details) $ in Thousands |  |  | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 27, 2024 USD ($) | Jan. 27, 2021 USD ($) promissory_note | Dec. 31, 2024 USD ($) | Jun. 30, 2025 USD ($) | Dec. 01, 2025 USD ($) | Feb. 01, 2023 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Unamortized discount |  |  | $ 24 | $ 23 |  |
CFG Loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of instruments (in instruments) | promissory_note |  | 2 |  |  |  |
Secured Debt | Arq Limited |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Periodic payment, principal |  | $ 100 |  |  |  |
Indebtedness to net worth ratio |  |  |  | 4 |  |
Debt instrument, annual increase |  |  |  | 20.00% |  |
Equity percentage |  |  |  | 1.25 |  |
Secured Debt | Arq Limited | CTB Loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount |  |  |  |  |  | $ 10,000
Estimated fair value |  |  |  |  |  | 9,700
Unamortized discount |  |  |  |  |  | $ 300
Secured Debt | Arq Limited | Promissory Note A |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount |  | 8,000 |  |  |  |
Secured Debt | Arq Limited | Promissory Note B |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face amount |  | $ 2,000 |  |  |  |
Secured Debt | Through January 2026 | Arq Limited |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate, stated percentage |  | 6.00% |  |  |  |
Secured Debt | Penalty Year 2024 | Arq Limited |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment penalty, percentage |  |  |  | 3.00% |  |
Secured Debt | Penalty Year 2025 | Arq Limited |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment penalty, percentage |  |  |  | 2.00% |  |
Secured Debt | Penalty Year 2026 | Arq Limited |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Prepayment penalty, percentage |  |  |  | 1.00% |  |
Secured Debt | Prime Rate | After January 2026 | Arq Limited | CTB Loan |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate, stated percentage |  | 2.75% |  |  |  |
Revolving Credit Facility | Secured Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Term | 5 years |  | 5 years |  |  |
Line of credit facility, maximum borrowing capacity | $ 30,000 |  |  |  |  |
Line of credit facility, commitment fee percentage | 0.50% |  |  |  |  |
Line of credit facility, management fee percentage | 0.25% |  |  |  |  |
Minimum cash balance requirement | $ 5,000 |  |  |  |  |
Loan due |  |  |  | $ 18,500 |  |
Revolving Credit Facility | Secured Debt | Tranche Year One |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, preclosure fee percentage | 2.00% |  |  |  |  |
Revolving Credit Facility | Secured Debt | Tranche Year Two |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, preclosure fee percentage | 1.00% |  |  |  |  |
Revolving Credit Facility | Secured Debt | Tranche Year Three |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, preclosure fee percentage | 0.50% |  |  |  |  |
Revolving Credit Facility | Secured Debt | Tranche Year Thereafter |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, preclosure fee percentage | 0.00% |  |  |  |  |
Revolving Credit Facility | Secured Debt | December 1st, 2025 | Forecast |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Minimum cash balance requirement |  |  |  |  | $ 5,000 |
Revolving Credit Facility | Secured Debt | SOFR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 4.50% |  |  |  |  |
Floor | 2.50% |  |  |  |  |

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