ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Changes in accumulated other comprehensive loss [Abstract]
Net foreign currency translation adjustment		$ 302	$ 375	$ 850	$ (1,754)
Net change in postretirement benefit plan (see Note 14 for further information) [Abstract]
Initial adoption of new plan	[1]			(444)	0
Amortization of prior service cost/(credit)		16	(4)	40	(14)
Amortization of gain		(3)	0	(8)	0
Total before tax		13	(4)	(412)	(14)
Tax		(4)	1	(9)	5
Net of tax		9	(3)	(421)	(9)
Other comprehensive income (loss)		$ 311	$ 372	$ 429	$ (1,763)

[1] See Note 14.