v3.26.1
Debt Obligations - Narrative (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 27, 2021
USD ($)
promissory_note
Dec. 31, 2024
USD ($)
Mar. 31, 2026
USD ($)
Jan. 31, 2027
USD ($)
Dec. 31, 2025
USD ($)
Feb. 01, 2023
USD ($)
Debt Instrument [Line Items]            
Unamortized discount     $ 24   $ 24  
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 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]            
Contractual period   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 $ 2,500      
Revolving Credit Facility | Secured Debt | Forecast            
Debt Instrument [Line Items]            
Minimum cash balance requirement       $ 5,000    
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 | SOFR            
Debt Instrument [Line Items]            
Basis spread on variable rate   4.50%        
Floor   2.50%