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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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