GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Summary of goodwill amount
Gross carrying value of goodwill	$ 39,117	$ 39,132
Accumulated impairment losses	(32,434)	(32,434)
Currency translation adjustments	(15)
Goodwill, Period Increase (Decrease)	(15)
Balance at the end of the period	6,683	6,698
MMS
Summary of goodwill amount
Gross carrying value of goodwill	32,434	32,434
Accumulated impairment losses	(32,434)	(32,434)
Currency translation adjustments	0
Goodwill, Period Increase (Decrease)	0
Balance at the end of the period	0	0
ATA
Summary of goodwill amount
Gross carrying value of goodwill	6,683	6,698
Accumulated impairment losses	0	0
Currency translation adjustments	(15)
Goodwill, Period Increase (Decrease)	(15)
Balance at the end of the period	$ 6,683	$ 6,698