INCOME TAXES - Reconciliation of Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits at the beginning of the year	$ 11,180	$ 10,560	$ 13,020
Additions based on tax positions related to the current year	521	12	574
Additions for tax positions from prior years	2,173	608	340
Subtractions for federal tax reform	0	0	(3,296)
Subtractions for tax positions from prior years	(336)	0	(78)
Unrecognized tax benefits at the end of the year	$ 13,538	$ 11,180	$ 10,560