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Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2025

Payables and Accruals [Abstract]

Schedule of accrued liabilities

Accrued liabilities as of December 31, 2024 and June 30, 2025 consisted of the following (in thousands):

​

​	​	​	​	​	​	​
​	​	December 31,		​	June 30,
​		2024			2025
Accrued alternative fuels incentives(1)	​	$	42,565	​	$	36,272
Accrued employee benefits	​		5,271	​		4,698
Accrued gas and equipment purchases	​		17,764	​		17,838
Accrued interest	​		1,451	​		1,454
Accrued property and other taxes	​		5,628	​		6,914
Accrued salaries and wages	​		11,902	​		7,231
Asset retirement obligation (current portion)	​	​	7,047	​	​	8,838
Other(2)	​		13,935	​		14,293
Total accrued liabilities	​	$	105,563	​	$	97,538

(1) Includes amount for RINs, LCFS Credits, and AFTC payable to third parties.

(2) No individual item in “Other” exceeds 5% of total current liabilities.

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Tabular disclosure of the components of accrued liabilities.

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