REVENUE FROM CONTRACT WITH CUSTOMERS - Activity of Contract Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Contract with Customer, Liability [Abstract]
Beginning balance	$ 2,476	$ 2,071	$ 2,396
Additions	0	730	0
Amortization	(325)	(325)	(325)
Ending balance	$ 2,151	$ 2,476	$ 2,071