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Inventories (Tables) | 9 Months Ended
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Sep. 30, 2012
Inventory Disclosure [Abstract] |
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 |  |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic -SubTopic -Publisher SEC -Number 210 -Article 5 -Subparagraph a,b,c -Name Regulation S-X (SX) -Paragraph 6 -Section 2 + Details
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