INCOME TAXES - UNRECOGNIZED TAX BENEFITS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0	$ 0
Interest expense in the income statements	0	0	$ 0
Penalties in the income statements	0	0	$ 0
Accrued interest on the balance sheets	0	0
Accrued penalties on the balance sheets	$ 0	$ 0