INVENTORIES - Composition of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of inventories [Abstract]
Raw materials	$ 52,617	$ 52,157
Work in process	29,927	30,017
Finished goods	81,605	88,307
Parts and supplies	20,788	20,194
Current inventories	$ 184,937	$ 190,675

A classification of current inventory representing the amount of goods that have completed the production process and are held for sale in the ordinary course of business. [Refer: Inventories]

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The amount of current inventories. [Refer: Inventories]

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A classification of current inventory representing the amount of assets to be consumed in the production process or in the rendering of services. [Refer: Inventories]

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A classification of current inventory representing the amount of interchangeable parts that are kept in an inventory and are used for the repair or replacement of failed parts. [Refer: Inventories]

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A classification of current inventory representing the amount of assets currently in production, which require further processes to be converted into finished goods or services. [Refer: Current finished goods; Inventories]

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Disclosure of inventories [Abstract]

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