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Property, Plant and Equipment (Tables)
9 Months Ended
Sep. 30, 2018
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
    September 30,     December 31,  
    2018     2017  
    ($000's ommitted)  
             
Land   $ 7     $ 7  
Buildings     10,887       10,288  
Machinery, equipment and tooling     17,815       17,249  
Construction in progress     931       665  
      29,640       28,209  
Less accumulated depreciation     (17,927 )     (17,188 )
    $ 11,713     $ 11,021