GOODWILL AND INTANGIBLE ASSETS Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		$ 1,154,464	$ 1,255,936
Accumulated Impairment Losses, Beginning Balance		(473,066)	(473,066)
Goodwill, Net Beginning Balance		622,243	681,398	$ 782,870
Goodwill, Other Changes	[1]		(2,842)
Impairment Charge				36,213
Foreign Currency		(59,155)	(98,630)
Accumulated Impairment Losses, Ending Balance		(473,066)	(473,066)	(473,066)
Goodwill, Gross Ending Balance		1,095,309	1,154,464	1,255,936
BULGARIA
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		175,494	179,609
Accumulated Impairment Losses, Beginning Balance		(144,639)	(144,639)
Goodwill, Net Beginning Balance		27,726	30,855	34,970
Impairment Charge				16,813
Foreign Currency		(3,129)	(4,115)
Accumulated Impairment Losses, Ending Balance		(144,639)	(144,639)	(144,639)
Goodwill, Gross Ending Balance		172,365	175,494	179,609
CROATIA
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		11,065	11,149
Accumulated Impairment Losses, Beginning Balance		(10,454)	(10,454)
Goodwill, Net Beginning Balance		551	611	695
Foreign Currency		(60)	(84)
Accumulated Impairment Losses, Ending Balance		(10,454)	(10,454)	(10,454)
Goodwill, Gross Ending Balance		11,005	11,065	11,149
CZECH REPUBLIC
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		800,640	876,447
Accumulated Impairment Losses, Beginning Balance		(287,545)	(287,545)
Goodwill, Net Beginning Balance		471,946	513,095	588,902
Foreign Currency		(41,149)	(75,807)
Accumulated Impairment Losses, Ending Balance		(287,545)	(287,545)	(287,545)
Goodwill, Gross Ending Balance		759,491	800,640	876,447
ROMANIA
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		94,777	109,028
Accumulated Impairment Losses, Beginning Balance		(11,028)	(11,028)
Goodwill, Net Beginning Balance		74,415	83,749	98,000
Goodwill, Other Changes	[1]		(2,842)
Foreign Currency		(9,334)	(11,409)
Accumulated Impairment Losses, Ending Balance		(11,028)	(11,028)	(11,028)
Goodwill, Gross Ending Balance		85,443	94,777	109,028
Slovak Republic [Member]
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		53,088	60,303
Accumulated Impairment Losses, Beginning Balance		0	0
Goodwill, Net Beginning Balance		47,605	53,088	60,303
Foreign Currency		(5,483)	(7,215)
Accumulated Impairment Losses, Ending Balance		0	0	0
Goodwill, Gross Ending Balance		47,605	53,088	60,303
Slovenia [Member]
Goodwill [Roll Forward]
Goodwill, Gross Beginning Balance		19,400	19,400
Accumulated Impairment Losses, Beginning Balance		(19,400)	(19,400)
Goodwill, Net Beginning Balance		0	0	0
Impairment Charge				19,400
Foreign Currency		0	0
Accumulated Impairment Losses, Ending Balance		(19,400)	(19,400)	(19,400)
Goodwill, Gross Ending Balance		$ 19,400	$ 19,400	$ 19,400

[1] 1) Amount represents the goodwill allocated to businesses held-for-sale based on their fair value relative to the fair value of the reporting unit's continuing operations. Bulgaria Croatia Czech Republic Romania Slovak Republic Slovenia TotalGross Balance, December 31, 2014$175,494 $11,065 $800,640 $94,777 $53,088 $19,400 $1,154,464Accumulated impairment losses(144,639) (10,454) (287,545) (11,028) — (19,400) (473,066)Balance, December 31, 201430,855 611 513,095 83,749 53,088 — 681,398Foreign currency(3,129) (60) (41,149) (9,334) (5,483) — (59,155)Balance, December 31, 201527,726 551 471,946 74,415 47,605 — 622,243Accumulated impairment losses(144,639) (10,454) (287,545) (11,028) — (19,400) (473,066)Gross Balance, December 31, 2015$172,365 $11,005 $759,491 $85,443 $47,605 $19,400 $1,095,309