SUMMARY OF SIGNIFICANT ACCOUNTING AND BUSINESS POLICIES, Receivables and Credit Risk (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Changes in allowance [Roll Forward]
Balance at beginning of year		$ 8,160		$ 9,364		$ 8,713
Charged to cost and expenses		3,367		180		2,014
Charged to other accounts		22	[1]	(17)	[2]	1,255	[2]
Deductions	[3]	(2,534)		(1,367)		(2,618)
Balance at end of year		$ 9,015		$ 8,160		$ 9,364

[1] Primarily due to translation adjustments.

[2] Includes allowance for doubtful accounts from acquisitions and divestiture

[3] Uncollectible accounts written off, net of recoveries