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Arq Acquisition - Narrative (Details) $ / shares in Units, $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 21, 2023 USD ($) | Mar. 31, 2023 shares | Feb. 01, 2023 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2023 USD ($) | Sep. 30, 2024 $ / shares shares | Dec. 31, 2023 $ / shares shares | Feb. 28, 2023
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase par value (in dollars per share) | $ / shares |  |  |  | $ 0.001 |  | $ 0.001 |  |  | $ 0.001 |
Temporary equity, par value (in dollars per share) | $ / shares |  |  | $ 0.001 |  |  |  |  |  |  |
Paid-in-kind dividend on Series A Preferred Stock | $ 200 |  |  |  |  | $ 0 | $ 157 |  |  |
Preferred stock, shares issued (in shares) | shares |  |  |  | 0 |  | 0 |  | 0 | 0 |
Preferred stock par value (in dollars per share) | $ / shares |  |  |  | $ 0.001 |  | $ 0.001 |  |  | $ 0.001 |
Consideration received on transaction |  |  |  | $ 26,700 |  |  |  |  |  |
Price per share (in dollars per share) | (per share) |  |  | $ 4.00 |  |  |  |  | $ 5.25 |  |
Arq Limited |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Subsidiary, ownership percentage, parent |  |  |  |  |  |  |  |  |  | 100.00%
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock dividends declared on redeemable preferred stock (in shares) | shares |  | 68,464 |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration received on transaction |  |  | $ 15,400 |  |  |  |  |  |  |
Arq Limited |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration transferred |  |  | 31,200 |  |  |  |  |  |  |
Acquisition related costs |  |  | $ 8,700 |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) | shares |  |  | 833,914 |  |  |  |  |  |  |
Preferred stock par value (in dollars per share) | $ / shares |  |  | $ 3.46 |  |  |  |  |  |  |
Contingent consideration, liability |  |  | $ 3,300 |  |  |  |  |  |  |
Decrease in depreciation and amortization |  |  |  |  | $ 200 |  |  |  |  |
Increase in intangible assets |  |  |  |  | 100 |  |  |  |  |
Increase in interest expense |  |  |  |  | $ 200 |  |  |  |  |
Arq Limited | Series A Preferred Stock |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, shares designated (in shares) | shares |  |  | 8,900,000 |  |  |  |  |  |  |
Shares issued (in dollars per share) | $ / shares |  |  | $ 4.00 |  |  |  |  |  |  |
Arq Limited | Common Stock |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Business acquisition, issued number of shares (in shares) | 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) | shares |  |  | 5,294,462 |  |  |  |  |  |  |
Business acquisition, issued number of shares issuable, value |  |  | $ 18,800 |  |  |  |  |  |  |

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