Nature of Business, Financial Condition and Basis of Presentation (Details) ft² in Thousands, lb in Millions, gal in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) a ft² MMBTU item lb gal
Nature of Business, Financial Condition and Basis of Presentation
Renewable natural gas facilities, original design capacity | MMBTU	355,000
Notice of Grant and Agreement Award with the U.S. Department of Agriculture
Nature of Business, Financial Condition and Basis of Presentation
Project development costs	$ 0.7
Amount received from development cost	$ 0.8
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration]	Project Development Costs
Maximum | Notice of Grant and Agreement Award with the U.S. Department of Agriculture
Nature of Business, Financial Condition and Basis of Presentation
Commodities grant	$ 30.0
Lake Preston, South Dakota | Hydrocarbon revenue
Nature of Business, Financial Condition and Basis of Presentation
Project production capacity (in gallon per year) | gal	65
Lake Preston, South Dakota | Sustainable Aviation Fuel (SAF)
Nature of Business, Financial Condition and Basis of Presentation
Project production capacity (in gallon per year) | gal	60
Lake Preston, South Dakota | High-Value Protein Products
Nature of Business, Financial Condition and Basis of Presentation
Project production capacity (in pound per year) | lb	1,390
Lake Preston, South Dakota | Corn Oil
Nature of Business, Financial Condition and Basis of Presentation
Project production capacity (in pound per year) | lb	34
Luverne, Minnesota | Land
Nature of Business, Financial Condition and Basis of Presentation
Area of land (in acres) | a	55
Luverne, Minnesota | Building and Building Improvements
Nature of Business, Financial Condition and Basis of Presentation
Area of real estate property | ft²	50
Northwest Iowa
Nature of Business, Financial Condition and Basis of Presentation
Number of dairies | item	3