GOODWILL AND INTANGIBLE ASSETS Goodwill (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 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	(5,723)
Accumulated Impairment Losses, Ending Balance	(473,066)
Gross Balance, June 30, 2014	1,250,213
Goodwill (Note 4)	777,147	782,870
BULGARIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	179,609
Accumulated Impairment Losses, Beginning Balance	(144,639)
Foreign Currency	(317)
Accumulated Impairment Losses, Ending Balance	(144,639)
Gross Balance, June 30, 2014	179,292
Goodwill (Note 4)	34,653	34,970
CROATIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	11,149
Accumulated Impairment Losses, Beginning Balance	(10,454)
Foreign Currency	(39)
Accumulated Impairment Losses, Ending Balance	(10,454)
Gross Balance, June 30, 2014	11,110
Goodwill (Note 4)	656	695
CZECH REPUBLIC [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	876,447
Accumulated Impairment Losses, Beginning Balance	(287,545)
Foreign Currency	(6,027)
Accumulated Impairment Losses, Ending Balance	(287,545)
Gross Balance, June 30, 2014	870,420
Goodwill (Note 4)	582,875	588,902
ROMANIA [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	109,028
Accumulated Impairment Losses, Beginning Balance	(11,028)
Foreign Currency	1,242
Accumulated Impairment Losses, Ending Balance	(11,028)
Gross Balance, June 30, 2014	110,270
Goodwill (Note 4)	99,242	98,000
SLOVAK REPUBLIC [Member]
Goodwill [Roll Forward]
Gross Balance, December 31, 2013	60,303
Accumulated Impairment Losses, Beginning Balance	0
Foreign Currency	(582)
Accumulated Impairment Losses, Ending Balance	0
Gross Balance, June 30, 2014	59,721
Goodwill (Note 4)	59,721	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, June 30, 2014	19,400
Goodwill (Note 4)	$ 0	$ 0