Arq Acquisition - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended
	Apr. 21, 2023	Mar. 31, 2023	Feb. 01, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Business Acquisition [Line Items]
Purchase par value (in dollars per share)			$ 0.001	$ 0.001		$ 0.001
Temporary equity, par value (in dollars per share)			0.001
Paid-in-kind dividend on Series A Preferred Stock	$ 200			$ 0	$ 157
Preferred stock, shares issued (in shares)				0		0
Preferred stock par value (in dollars per share)				$ 0.001		$ 0.001
Price per share (in dollars per share)			$ 4.00
Series A Preferred Stock
Business Acquisition [Line Items]
Preferred stock dividends declared on redeemable preferred stock (in 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)			833,914
Preferred stock par value (in dollars per share)			$ 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)			8,900,000
Shares issued (in dollars per share)			$ 4.00
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