XML 25 R12.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
6.
Inventories
Inventories are valued at the lower of cost or market. Inventories at March 31, 2018 and December 31, 2017 consisted of the following:
 
March 31,
2018
 
December 31,
2017
Inventories carried at LIFO:
 
 
 
Finished goods
$
47,131

 
$
43,439

Raw materials, production parts and work-in-process
26,375

 
23,694

LIFO reserve
(28,788
)
 
(28,429
)
Total LIFO inventories
44,718

 
38,704

Inventories carried at FIFO:
 

 
 

Finished goods
55,747

 
54,161

Raw materials, production parts and work-in-process
39,825

 
34,829

Total FIFO inventories
95,572

 
88,990

Total inventories
$
140,290

 
$
127,694


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