NEW ACCOUNTING STANDARDS (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amounts reclassified from Cost of sales	$ (51,744)	$ (43,388)
Amounts reclassified from Selling, general and administrative expenses	(20,361)	(17,574)
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amounts reclassified from Cost of sales		200
Amounts reclassified from Selling, general and administrative expenses		$ 100
Other non-operating income	$ 100