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Note 4 - Retirement Plan
 12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Compensation and Employee Benefit Plans [Text Block]
4.
RETIREMENT PLAN
  
The Company has established a salary deferral plan under Section 
401
(k) of the Internal Revenue Code.  Such deferrals accumulate on a tax-deferred basis until the employee withdraws the funds.  Historically, the Company has contributed up to
5%
of each eligible employee's compensation.  As part of cost reduction efforts in
2020
the Company temporarily suspended its
5%
contribution in
2020.
Total retirement expense for the years ended
December 
31,
2020
 and
2019
 was approximately
$120,000
and
$241,000,
respectively.  The Company anticipates it will resume at least a portion of its
5%
401
(k) contribution in
2021
as business conditions allow.