Note 13 - Defined Contribution Plan

12 Months Ended

Dec. 31, 2020

Notes to Financial Statements

Retirement Benefits [Text Block]

13.

     DEFINED CONTRIBUTION PLAN

We have a retirement savings plan available for all our U.S. employees who have met minimum length-of-service requirements. Our contributions are determined based upon amounts contributed by the employees with additional contributions made at the discretion of the Board of Directors. Costs related to this plan were

$222

and 

$262

 in

2020

 and 

2019

, respectively.