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Note 14 - Segment Information (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   

Three Months Ended
September 30,

   

Nine Months Ended
September 30,

 
   

2024

   

2023

   

2024

   

2023

 
           

 

           

 

 

Revenue:

                               

Electronic Test

  $ 15,481     $ 11,547     $ 42,756     $ 32,911  

Environmental Technologies

    6,734       7,000       21,835       23,178  

Process Technologies

    8,057       12,394       29,496       39,329  

Total revenue

  $ 30,272     $ 30,941     $ 94,087     $ 95,418  
                                 

Income from divisional operations:

                               

Electronic Test

  $ 2,311     $ 3,268     $ 5,867     $ 8,487  

Environmental Technologies

    426       523       1,434       2,479  

Process Technologies

    1,070       2,094       4,001       7,362  

Total income from divisional operations

    3,807       5,885       11,302       18,328  

Corporate expenses

    (2,376 )     (2,902 )     (7,551 )     (7,416 )

Acquired intangible amortization

    (944 )     (515 )     (2,436 )     (1,582 )

Interest expense

    (219 )     (168 )     (612 )     (526 )

Other income

    301       423       949       678  

Earnings before income tax expense

  $ 569     $ 2,723     $ 1,652     $ 9,482  
   

September 30,

   

December 31,

 
   

2024

   

2023

 

Identifiable assets:

               

Electronic Test

  $ 81,592     $ 32,505  

Environmental Technologies

    21,335       16,772  

Process Technologies

    53,596       56,842  

Corporate

    1,844       28,710  
    $ 158,367     $ 134,829  
Revenue from External Customers by Geographic Areas [Table Text Block]
   

Three Months Ended
September 30,

   

Nine Months Ended
September 30,

 
   

2024

   

2023

   

2024

   

2023

 
           

 

           

 

 

Revenue:

                               

U.S.

  $ 10,866     $ 10,272     $ 35,766     $ 31,274  

Foreign

    19,406       20,669       58,321       64,144  
    $ 30,272     $ 30,941     $ 94,087     $ 95,418  
Long-Lived Assets by Geographic Areas [Table Text Block]
   

September 30,

   

December 31,

 
   

2024

   

2023

 

Property and equipment:

               

U.S.

  $ 2,614     $ 2,502  

Foreign

    1,959       688  
    $ 4,573     $ 3,190