REVENUE - Disaggregation of Revenue by Major Products and Services Lines (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation Of Revenue [Line Items]
Revenue	$ 44,732	$ 37,716	$ 127,474	$ 117,933
Product [Member]
Disaggregation Of Revenue [Line Items]
Revenue	37,204	32,431	107,976	102,130
Transportation [Member]
Disaggregation Of Revenue [Line Items]
Revenue	4,167	4,066	12,688	12,095
License fees from Construction Partners [Member]
Disaggregation Of Revenue [Line Items]
Revenue	174	180	588	539
Total product revenue [Member]
Disaggregation Of Revenue [Line Items]
Revenue	41,545	36,677	121,252	114,764
Installation and other services [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 3,187	$ 1,039	$ 6,222	$ 3,169

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details