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Inventories
 12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
INVENTORIES
INVENTORIES
 
      Inventories valued at LIFO represented 49% and 45% of total inventory for the years ended December 31, 2016 and 2015, respectively. The excess of current costs over LIFO-valued inventories was $8,123,000 and $8,712,000 on December 31, 2016 and December 31, 2015, respectively. Inventories consisted of the following on a cost basis, net of reserves:
 
 
December 31,
(in thousands)
 
2016
 
2015
Finished goods and parts
 
$
116,667

 
$
129,995

Work in process
 
9,431

 
9,561

Raw materials
 
9,662

 
11,202

 
 
$
135,760

 
$
150,758