OTHER (EXPENSE) INCOME, NET Components of Other (Expense) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other Income and Expenses [Abstract]
Interest and investment income	$ 312	$ 7
Income tax expense	(206)	(236)
Other non-operating income	2	0
Total other income (expense), net	$ 108	$ (229)