Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts Payable and Accrued Liabilities [Line Items]
Accounts payable	$ 3,858	$ 5,009
Accrued payroll and related benefits	4,505	5,105
Total accounts payable and accrued liabilities	24,931	24,760
NW Lowa RNG
Accounts Payable and Accrued Liabilities [Line Items]
Accrued liabilities	16,193	12,594
Net Zero Segment
Accounts Payable and Accrued Liabilities [Line Items]
Accrued sales and use tax	$ 375	$ 2,052