REVENUE - Disaggregation of Revenue by Major Products and Services Lines (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenues	$ 181,931	$ 172,161	$ 147,593
Product [Member]
Disaggregation Of Revenue [Line Items]
Revenues	158,405	147,448	129,031
Transportation [Member]
Disaggregation Of Revenue [Line Items]
Revenues	17,674	18,030	13,231
License fees from Construction Partners [Member]
Disaggregation Of Revenue [Line Items]
Revenues	840	778	738
Total product revenue [Member]
Disaggregation Of Revenue [Line Items]
Revenues	176,919	166,256	143,000
Installation and other services [Member]
Disaggregation Of Revenue [Line Items]
Revenues	$ 5,012	$ 5,905	$ 4,593