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Inventories
3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Inventories
3. Inventories

 

    March 31,     December 31,  
    2019     2018  
    ($000's omitted)  
Raw material and common parts   $ 9,956     $ 9,088  
Work-in-process     5,211       5,123  
Finished goods     1,963       2,482  
      17,130       16,693  
Less inventory reserve     (1,465 )     (1,543 )
Total inventories   $ 15,665     $ 15,150