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Inventories (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Inventories carried at LIFO: |  |
Finished goods | $ 39,737 | $ 36,238
Raw materials, production parts and work-in-process | 14,984 | 13,922
LIFO Reserve | (27,463) | (27,463)
LIFO Inventory Amount | 27,258 | 22,697
Inventories carried at FIFO: |  |
Finished goods | 33,401 | 31,489
Raw materials, production parts and work-in-process | 13,179 | 12,720
Total FIFO inventories | 46,580 | 44,209
Total Inventories | $ 73,838 | $ 66,906

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- Definition Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph c -Article 5 + Details
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