OTHER EXPENSE , NET Components of Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Income and Expenses [Abstract]
Interest and investment income	$ 24	$ 9	$ 63	$ 35
Income tax expense	(601)	(356)	(643)	(475)
Other non-operating income	0	0	126	0
Total other income (expense), net	$ (577)	$ (347)	$ (454)	$ (440)