Note 10 - Disposition of Assets and Restructuring (Details Textual) - USD ($)	Nov. 14, 2022	Oct. 24, 2022	Sep. 13, 2022	Jan. 03, 2022	Sep. 30, 2022	Dec. 31, 2021
Preferred Stock, Par or Stated Value Per Share (in dollars per share)					$ 0.01	$ 0.01
Preferred Stock, Voting Power, Percent			85.00%
Series A Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)			685,505	685,505
Preferred Stock, Par or Stated Value Per Share (in dollars per share)				$ 0.01
Preferred Stock, Voting Power, Percent			85.00%	85.00%
Lime Rock Resources V-A, L.P. [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total				$ 87,200,000
AGEF [Member] | Series A Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)				685,505
Biglari Holdings [Member] | Subsequent Event [Member]
Capital Stock, Voting Power, Percent		90.00%
Biglari Holdings [Member] | Second Exchange Agreement [Member] | Subsequent Event [Member]
Stock Issuable During Period, Shares, Conversion of Convertible Securities (in shares)	90,631,287	90,631,287