OTHER INCOME, NET Components of Other Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Income and Expenses [Abstract]
Interest and investment income	$ 147	$ 15
Income tax benefit (expense)	163	(87)
Other non-operating income	0	96
Total other income (expense), net	$ 310	$ 24