GOODWILL AND INTANGIBLE ASSETS Goodwill (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	$ 1,255,936
Accumulated Impairment Losses, Beginning Balance	(473,066)
Foreign Currency	(68,046)
Accumulated Impairment Losses, Ending Balance	(473,066)
Gross Balance, September 30, 2014	1,187,890
Goodwill (Note 4)	714,824	782,870
BULGARIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	179,609
Accumulated Impairment Losses, Beginning Balance	(144,639)
Foreign Currency	(3,043)
Accumulated Impairment Losses, Ending Balance	(144,639)
Gross Balance, September 30, 2014	176,566
Goodwill (Note 4)	31,927	34,970
CROATIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	11,149
Accumulated Impairment Losses, Beginning Balance	(10,454)
Foreign Currency	(55)
Accumulated Impairment Losses, Ending Balance	(10,454)
Gross Balance, September 30, 2014	11,094
Goodwill (Note 4)	640	695
CZECH REPUBLIC [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	876,447
Accumulated Impairment Losses, Beginning Balance	(287,545)
Foreign Currency	(52,834)
Accumulated Impairment Losses, Ending Balance	(287,545)
Gross Balance, September 30, 2014	823,613
Goodwill (Note 4)	536,068	588,902
ROMANIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	109,028
Accumulated Impairment Losses, Beginning Balance	(11,028)
Foreign Currency	(6,832)
Accumulated Impairment Losses, Ending Balance	(11,028)
Gross Balance, September 30, 2014	102,196
Goodwill (Note 4)	91,168	98,000
SLOVAK REPUBLIC [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	60,303
Accumulated Impairment Losses, Beginning Balance	0
Foreign Currency	(5,282)
Accumulated Impairment Losses, Ending Balance	0
Gross Balance, September 30, 2014	55,021
Goodwill (Note 4)	55,021	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, September 30, 2014	19,400
Goodwill (Note 4)	$ 0	$ 0