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Arq Acquisition - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Apr. 21, 2023
Mar. 31, 2023
Feb. 01, 2023
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Dec. 31, 2022
Business Acquisition [Line Items]              
Paid-in-kind dividend on Series A Preferred Stock $ 200     $ 157 $ 0    
Preferred stock, shares issued (in shares)       0   0 0
Preferred stock par value (in dollars per share)       $ 0.001   $ 0.001 $ 0.001
Series A Preferred Stock              
Business Acquisition [Line Items]              
Preferred stock dividends declared on redeemable preferred stock (in shares)   68,464          
Arq Limited              
Business Acquisition [Line Items]              
Consideration transferred     $ 31,200        
Acquisition related costs     $ 8,700        
Preferred stock, shares issued (in shares)     833,914        
Preferred stock par value (in dollars per share)     $ 3.46        
Contingent consideration, liability     $ 3,300        
Increase in payroll and benefits for compensation expense         1,900    
Decrease in depreciation and amortization       $ 200 600    
Increase in intangible assets       100 200    
Increase in interest expense       $ 200 $ 300    
Reversal of transaction costs           $ 6,200  
Arq Limited | Series A Preferred Stock              
Business Acquisition [Line Items]              
Preferred stock, shares designated (in shares)     8,900,000        
Shares issued (in dollars per share)     $ 4.00        
Effective interest rate     8.00%        
Arq Limited | Common Stock              
Business Acquisition [Line Items]              
Business acquisition, issued number of shares (in shares)     3,814,864        
Business acquisition, issued number of shares issuable, value     $ 12,400        
Arq Limited | Preferred Stock              
Business Acquisition [Line Items]              
Business acquisition, issued number of shares (in shares)     5,294,462        
Business acquisition, issued number of shares issuable, value     $ 18,800