Our inventories are valued at the lower of cost or market and computed on a first-in, first-out (FIFO) basis. Components of inventories, net of reserves, are as follows:
 
December 31,
 
2016
 
2015
Parts and raw materials
$
43,278

 
$
40,578

Work in process
5,292

 
5,643

Finished goods
7,200

 
6,352

 
$
55,770

 
$
52,573