GOODWILL AND INTANGIBLE ASSETS Goodwill (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	$ 1,255,936
Accumulated Impairment Losses, Beginning Balance	(473,066)
Foreign Currency	520
Accumulated Impairment Losses, Ending Balance	(473,066)
Gross Balance, March 31, 2014	1,256,456
Goodwill (Note 4)	783,390	782,870
BULGARIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	179,609
Accumulated Impairment Losses, Beginning Balance	(144,639)
Foreign Currency	13
Accumulated Impairment Losses, Ending Balance	(144,639)
Gross Balance, March 31, 2014	179,622
Goodwill (Note 4)	34,983	34,970
CROATIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	11,149
Accumulated Impairment Losses, Beginning Balance	(10,454)
Foreign Currency	(1)
Accumulated Impairment Losses, Ending Balance	(10,454)
Gross Balance, March 31, 2014	11,148
Goodwill (Note 4)	694	695
CZECH REPUBLIC
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	876,447
Accumulated Impairment Losses, Beginning Balance	(287,545)
Foreign Currency	(222)
Accumulated Impairment Losses, Ending Balance	(287,545)
Gross Balance, March 31, 2014	876,225
Goodwill (Note 4)	588,680	588,902
ROMANIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	109,028
Accumulated Impairment Losses, Beginning Balance	(11,028)
Foreign Currency	743
Accumulated Impairment Losses, Ending Balance	(11,028)
Gross Balance, March 31, 2014	109,771
Goodwill (Note 4)	98,743	98,000
SLOVAK REPUBLIC [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	60,303
Accumulated Impairment Losses, Beginning Balance	0
Foreign Currency	(13)
Accumulated Impairment Losses, Ending Balance	0
Gross Balance, March 31, 2014	60,290
Goodwill (Note 4)	60,290	60,303
SLOVENIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	19,400
Accumulated Impairment Losses, Beginning Balance	(19,400)
Foreign Currency	0
Accumulated Impairment Losses, Ending Balance	(19,400)
Gross Balance, March 31, 2014	19,400
Goodwill (Note 4)	$ 0	$ 0