GOODWILL (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Goodwill [Roll Forward]
Balance as of January 1, 2015	$ 57,417
Effect of net foreign currency exchange rate changes	(895)
Balance as of June 30, 2015	62,207
North America
Goodwill [Roll Forward]
Balance as of January 1, 2015	31,078
Effect of net foreign currency exchange rate changes	(151)
Balance as of June 30, 2015	26,150
Europe
Goodwill [Roll Forward]
Balance as of January 1, 2015	26,339
Effect of net foreign currency exchange rate changes	(744)
Balance as of June 30, 2015	36,057
Netsoft
Goodwill [Roll Forward]
Purchase accounting adjustments	30
Netsoft | North America
Goodwill [Roll Forward]
Purchase accounting adjustments	30
Netsoft | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments	0
GGA
Goodwill [Roll Forward]
Purchase accounting adjustments	(4,807)
Balance as of June 30, 2015	7,306
GGA | North America
Goodwill [Roll Forward]
Purchase accounting adjustments	(4,807)
GGA | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments	0
Great Fridays Limited
Goodwill [Roll Forward]
Purchase accounting adjustments	4,281
Balance as of June 30, 2015	11,327
Great Fridays Limited | North America
Goodwill [Roll Forward]
Purchase accounting adjustments	0
Great Fridays Limited | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments	$ 4,281