Note 8 - Revenues From Contracts With Customers and Other Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Year Ended December 31, 2021
Major Goods/Service Line	Revenues from Contracts with Customers		Other Revenues		Total
Ethanol sales and related products, net	$	50	$	—	$	50
Hydrocarbon revenue		483		—		483
Other revenue		—		178		178
	$	533	$	178	$	711
Timing of Revenue Recognition
Goods transferred at a point in time	$	533	$	—	$	533
Services transferred over time		—		178		178
	$	533	$	178	$	711

	Year Ended December 31, 2020
Major Goods/Service Line	Revenues from Contracts with Customers		Other Revenues		Total
Ethanol sales and related products, net	$	3,809	$	—	$	3,809
Hydrocarbon revenue		1,501		—		1,501
Other revenue		153		73		226
	$	5,463	$	73	$	5,536
Timing of Revenue Recognition
Goods transferred at a point in time	$	5,310	$	—	$	5,310
Services transferred over time		153		73		226
	$	5,463	$	73	$	5,536

	Year Ended December 31, 2019
Major Goods/Service Line	Revenues from Contracts with Customers		Other Revenues		Total
Ethanol sales and related products, net	$	22,115	$	—	$	22,115
Hydrocarbon revenue		2,338		—		2,338
Other revenue		—		34		34
	$	24,453	$	34	$	24,487
Timing of Revenue Recognition
Goods transferred at a point in time	$	24,453	$	—	$	24,453
Services transferred over time		—		34		34
	$	24,453	$	34	$	24,487