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INVENTORIES - Activity in reserves for excess and obsolete inventory (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Balance at beginning of period	$ (191,514)	$ (168,105)
Provision for excess and obsolete inventory	(24,829)	(58,485)
Disposal of unsaleable inventory	29,442	30,161
Other	(6,547)	4,915
Balance at end of period	$ (193,448)	$ (191,514)

X

- Definition

Inventory Valuation Reserve, Adjustments for Business Acquisitions, Foreign Currency and Other

+ References

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X

- Definition

Inventory Valuation Reserve, Disposal of Unsaleable Inventory

+ References

No definition available.

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X

- Definition

Inventory Valuation Reserve, Provision for Excess and Obsolete Inventory

+ References

No definition available.

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- References

No definition available.

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X

- Definition

Amount of valuation reserve for inventory.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.BB)
-URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729

Reference 2: 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(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=68049868&loc=d3e3927-108312

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