ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Changes in accumulated other comprehensive loss [Abstract]
Net foreign currency translation adjustment	$ 1,255	$ (2,680)
Net change in postretirement benefit plan (see Note 13 for further information) [Abstract]
Amortization of prior service credit	(2)	(5)
Amortization of loss	(3)	0
Total before tax	(5)	(5)
Tax	1	2
Net of tax	(4)	(3)
Other comprehensive income (loss)	1,251	(2,683)
Accumulated Other Comprehensive Loss [Line Items]
Accumulated other comprehensive (loss), at beginning of period	(5,114)
Other comprehensive income/(loss)	1,251	$ (2,683)
Accumulated other comprehensive (loss), at end of period	(3,863)
Foreign Currency Translation Adjustment [Member]
Net change in postretirement benefit plan (see Note 13 for further information) [Abstract]
Other comprehensive income (loss)	1,255
Accumulated Other Comprehensive Loss [Line Items]
Accumulated other comprehensive (loss), at beginning of period	(5,317)
Other comprehensive income/(loss)	1,255
Accumulated other comprehensive (loss), at end of period	(4,062)
Postretirement Benefit Plan [Member]
Net change in postretirement benefit plan (see Note 13 for further information) [Abstract]
Other comprehensive income (loss)	(4)
Accumulated Other Comprehensive Loss [Line Items]
Accumulated other comprehensive (loss), at beginning of period	203
Other comprehensive income/(loss)	(4)
Accumulated other comprehensive (loss), at end of period	$ 199