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Note 2 - Business Acquisition (Tables)
6 Months Ended
Apr. 30, 2022
Notes Tables  
Business Acquisition, Pro Forma Information [Table Text Block]
  

Three Months Ended April 30,

  

Six Months Ended April 30,

 
  

2022

  

2021

  

2022

  

2021

 
                 

Revenue

 $22,559  $14,869  $44,527  $27,988 

Net income

  429   5,146   739   4,666 
                 

Earnings per share

                

Basic

 $0.04  $0.52  $0.07  $0.47 

Diluted

 $0.04  $0.51  $0.07  $0.46 
Microlab/FXR LLC [Member]  
Notes Tables  
Schedule of Business Acquisitions, by Acquisition [Table Text Block]

Cash consideration paid

 $24,250,000 

Total consideration transferred

 $24,250,000 
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Current assets

 $6,924,000 

Property and equipment

  198,000 

Intangible assets

  13,840,000 

Goodwill

  4,990,000 

Non-interest bearing liabilities

  (1,702,000)

Net assets acquired at fair value

 $24,250,000