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MINING ASSET IMPAIRMENT AND INVENTORY WRITEDOWN (Notes)
 12 Months Ended
Dec. 31, 2016
MINING ASSET IMPAIRMENT AND INVENTORY WRITEDOWN [Abstract]  
Impairment of fixed assets
Impairment of long-lived assets
The Company reviews long-lived assets to assess recoverability from future operations whenever events and circumstances indicate that the carrying values may not be recoverable.  Impairment losses are recognized in operating results when expected undiscounted future cash flows are less than the carrying value of the asset.  Impairment losses are measured as the excess of the carrying value of the asset over the estimated fair value of the asset.
 
As a result of current operating losses combined with a history of operating losses, the Company determined that events and circumstances indicated that the carrying value of fixed assets may not be recoverable for two asset groups in the fourth quarter of 2016 and one asset group in the fourth quarter of 2015. These asset groups were reviewed for recoverability, however after the Company’s analysis no impairment was identified. As a result of the continued mining downturn combined with a history of operating losses, the Company determined in the second quarter of 2016, that the carrying value of the fixed assets at the Bryan, Ohio location may not be recoverable, however after the Company’s analysis no impairment was identified.
MINING ASSET IMPAIRMENT AND INVENTORY WRITE-DOWN

In 2014, the Company recorded an asset impairment and inventory write-downs of $23.2 million and $16.7 million, respectively. The impairment was recorded on machinery, equipment, and molds used to produce giant mining tires. Mining products are included in the Company's earthmoving/construction segment. In the second quarter of 2014, several large mining equipment manufacturers significantly decreased their sales forecasts for mining equipment. At that time, the Company's sales of mining products were deteriorating at an accelerated pace. Therefore, the Company tested mining related assets for impairment in the second quarter of 2014. The fair value of the mining equipment was determined using a cost and market approach. The inventory write-downs were to adjust the value of mining product inventory to estimated market value.