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1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
6 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
In the following table, revenue is disaggregated by primary geographical market, major product line, and timing of revenue recognition.

   

Three Months Ended June 30,

   

Six Months Ended June 30,

 
   

2018

   

2017

   

2018

   

2017

 

Primary geographical markets:

                               

United States

  $ 1,940,000     $ 1,543,000     $ 3,386,000     $ 3,519,000  

Asia

    179,000       204,000       369,000       370,000  

Other

    31,000       26,000       50,000       51,000  
      2,150,000       1,773,000       3,805,000       3,940,000  

Major product lines:

                               

ODM projects

  $ 1,231,000     $ 801,000     $ 2,075,000     $ 2,071,000  

ODM components

    711,000       794,000       1,428,000       1,525,000  

Distribution components

    208,000       178,000       302,000       344,000  
      2,150,000       1,773,000       3,805,000       3,940,000  

Timing of revenue recognition:

                               

Products transferred at a point in time

  $ 2,150,000     $ 1,773,000     $ 3,805,000     $ 3,940,000