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Inventories | 9 Months Ended
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Sep. 30, 2017
Inventory Disclosure [Abstract] |
Inventories | Inventories A summary of inventories follows (in thousands):
| September 30, 2017 |  | December 31, 2016
Finished product | $ | 184,778 |  |  | $ | 156,542 |
Work in process | 100,147 |  |  | 87,284 |
Raw material | 37,609 |  |  | 39,859 |
Supplies and other | 52,564 |  |  | 47,130 |
| $ | 375,098 |  |  | $ | 330,815 |
In July 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) No. 2015-11, Simplifying the Measurement of Inventory. This ASU amends Topic 330, Inventory. The ASU simplifies the measurement of inventory by requiring certain inventory to be measured at the lower of cost and net realizable value. The adoption of this standard on January 1, 2017 did not have a material impact on the Company's consolidated financial statements.

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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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