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Inventories
9 Months Ended
Sep. 30, 2012
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories are valued at the lower of cost or market. Inventories at September 30, 2012 and December 31, 2011 consisted of the following:
 
September 30,
2012
 
December 31,
2011
 
Inventories carried at LIFO:

 

 
Finished goods
$
36,005

 
$
32,648

 
Raw materials, production parts and work-in-process
15,072

 
16,611

 
LIFO reserve
(27,926
)
 
(27,926
)
 
Total LIFO inventories
23,151

 
21,333

 
Inventories carried at FIFO:
 

 
 

 
Finished goods
25,514

 
31,912

 
Raw materials, production parts and work-in-process
12,288

 
12,667

 
Total FIFO inventories
37,802

 
44,579

 
Total inventories
$
60,953

 
$
65,912

 

The LIFO reserve approximates the difference between LIFO carrying cost and FIFO.