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GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill	$ 57,417,000us-gaap_Goodwill				$ 22,268,000us-gaap_Goodwill				$ 57,417,000us-gaap_Goodwill	$ 22,268,000us-gaap_Goodwill	$ 22,698,000us-gaap_Goodwill
Goodwill impairment loss	2,241,000us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	2,241,000us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
North America
Goodwill [Line Items]
Goodwill	31,078,000				16,438,000				31,078,000	16,438,000	16,643,000
Goodwill impairment loss									0
Accumulated impairment loss	0				0				0	0	0
Europe
Goodwill [Line Items]
Goodwill	26,339,000				2,864,000				26,339,000	2,864,000	2,864,000
Goodwill impairment loss									0
Accumulated impairment loss	0				0				0	0	0
Russia
Goodwill [Line Items]
Goodwill	0				2,966,000				0	2,966,000	3,191,000
Goodwill impairment loss									2,241,000
Other
Goodwill [Line Items]
Goodwill	0				0				0	0	0
Accumulated impairment loss	$ 1,697,000								$ 1,697,000