REVENUE - Disaggregation of Revenue by Timing of Revenue Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenues	$ 29,465	$ 40,981
At a point in time [Member]
Disaggregation Of Revenue [Line Items]
Revenues	28,335	39,993
Over time [Member]
Disaggregation Of Revenue [Line Items]
Revenues	$ 1,130	$ 988