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Note 1 - Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Disaggregation of Revenue [Table Text Block]
  

Years ended December 31,

 
  

2021

  

2020

 

FACILITIES:

        

Maintenance revenues

 $3,540  $3,749 

Equipment sales

  2,039   1,980 

Deployment and other services

  1,496   3,274 

Total facilities revenues

  7,075   9,003 
         

SYSTEMS INTEGRATION:

        

Integration services

  5,668   7,286 

Procurement services

  14,667   28,773 

Total systems integration revenues

  20,335   36,059 

TOTAL REVENUES

 $27,410  $45,062 
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
  

2021

  

2020

 

U.S.-based IT OEM

  95%  97%
Allowance for Doubtful Accounts [Table Text Block]
  

Year Ended December 31,

 
  

2021

  

2020

 

Balance at beginning of year

 $7  $8 

Additions charged to expense

  -   - 

Recovery of amounts previously reserved

  -   - 

Amounts written off

  -   1 

Balance at end of year

 $7  $7