Note 2 - Discontinued Operations

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]

2.

     DISCONTINUED OPERATIONS

During

2017,

the Company suspended all operations associated with the Fuel Conversion business segment. The Company sold the remaining Fuel Conversion equipment within Assets held during the year ended

December 31, 2019 

for sales proceeds net of selling costs of

$505,

resulting in a gain on sale of

$20

recorded in discontinued operations.  Following the sale of the remaining Fuel Conversion equipment during

2019,

the Company completed the wind-down activities associated with the Fuel Conversion business segment. The Fuel Conversion business segment had

no

other assets or liabilities associated with it.

The activity of the Fuel Conversion discontinued operations consisted of Research and Development, severance, an impairment charge and other costs for the years ended

December 31, 2020

 and 

2019

, of 

$0

 and

$1,

respectively. The activity of the Fuel Conversion discontinued operations consisted primarily of storage costs for holding the equipment at a

third

-party location totaling

$21

for the year ended

December 31, 2019 

and the gain on sale of

$20

recorded in discontinued operations.