VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 1,306	$ 1,409	$ 2,011
Charged to Costs and Expenses	1,053	750	556
Removal of Uncollectible Receivables	(830)	(799)	(1,127)
Translation Adjustments Increase (Decrease)	(6)	(54)	(31)
Balance at the End of Period	1,523	1,306	1,409
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	247,967	175,218	161,875
Charged to Costs and Expenses	6,605	3,565	(643)
Other	(6,032)	73,390	15,331
Translation Adjustments Increase (Decrease)	327	(4,206)	(1,345)
Balance at the End of Period	$ 248,866	$ 247,967	$ 175,218