Note 3 - Revenues From Contracts With Customers and Other Revenues (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended March 31, 2021
Major Goods/Service Line	Revenues from Contracts with Customers		Other Revenues		Total
Hydrocarbon revenue	$	13	$	—	$	13
Other revenue		—		80		80
	$	13	$	80	$	93
Timing of Revenue Recognition
Goods transferred at a point in time	$	13	$	—	$	13
Services transferred over time		—		80		80
	$	13	$	80	$	93

	Three Months Ended March 31, 2020
Major Goods/Service Line	Revenues from Contracts with Customers		Other Revenues		Total
Ethanol sales and related products, net	$	3,700	$	—	$	3,700
Hydrocarbon revenue		125		—		125
	$	3,825	$	—	$	3,825
Timing of Revenue Recognition
Goods transferred at a point in time	$	3,825	$	—	$	3,825
Services transferred over time		—		—		—
	$	3,825	$	—	$	3,825