GOODWILL (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Goodwill [Roll Forward]
Goodwill beginning balance	$ 24,395
Accumulated impairment losses, beginning balance	(1,697)
Goodwill beginning balance	22,698
Effect of net foreign currency exchange rate changes	(394)
Goodwill ending balance	24,001
Accumulated impairment losses, beginning balance	(1,697)
Goodwill ending balance	22,304
North America [Member]
Goodwill [Roll Forward]
Goodwill beginning balance	16,643
Accumulated impairment losses, beginning balance	0
Goodwill beginning balance	16,643
Effect of net foreign currency exchange rate changes	(159)
Goodwill ending balance	16,484
Accumulated impairment losses, beginning balance	0
Goodwill ending balance	16,484
EU [Member]
Goodwill [Roll Forward]
Goodwill beginning balance	2,864
Accumulated impairment losses, beginning balance	0
Goodwill beginning balance	2,864
Effect of net foreign currency exchange rate changes	0
Goodwill ending balance	2,864
Accumulated impairment losses, beginning balance	0
Goodwill ending balance	2,864
Russia [Member]
Goodwill [Roll Forward]
Goodwill beginning balance	3,191
Accumulated impairment losses, beginning balance	0
Goodwill beginning balance	3,191
Effect of net foreign currency exchange rate changes	(235)
Goodwill ending balance	2,956
Accumulated impairment losses, beginning balance	0
Goodwill ending balance	2,956
Other Segment [Member]
Goodwill [Roll Forward]
Goodwill beginning balance	1,697
Accumulated impairment losses, beginning balance	(1,697)
Goodwill beginning balance	0
Effect of net foreign currency exchange rate changes	0
Goodwill ending balance	1,697
Accumulated impairment losses, beginning balance	(1,697)
Goodwill ending balance	$ 0