OTHER (EXPENSE) INCOME, NET Components of Other (Expense) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Income and Expenses [Abstract]
Interest and investment income	$ 7	$ 140
Income tax (expense) benefit	(236)	65
Other non-operating income	0	4
Total other (expense) income, net	$ (229)	$ 209