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Inventories | 3 Months Ended
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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.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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