OTHER INCOME, NET Components of Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Income and Expenses [Abstract]
Interest and investment income	$ 113	$ 24	$ 260	$ 39
Income tax benefit (expense)	79	45	242	(42)
Other non-operating income	0	30	0	126
Total other income (expense), net	$ 192	$ 99	$ 502	$ 123