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Inventories (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Inventory Disclosure [Abstract] |  |
Raw materials | $ 16,174 | $ 13,514
Supplies and service parts | 22,628 | 21,840
Finished products | 31,957 | 36,969
Inventory at FIFO cost | 70,759 | 72,323
Excess of FIFO cost over LIFO cost | (3,785) | (4,072)
Total inventory, net | $ 66,974 | $ 68,251

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- Definition The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=120391452&loc=d3e13212-122682 + Details
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