REVENUE (Tables)

3 Months Ended

Mar. 31, 2022

Revenue From Contract With Customer [Abstract]

Disaggregation of revenue by major products and services lines and timing of revenue recognition

In the following table, revenue is disaggregated by performance obligation and timing of revenue recognition. All revenue comes from contracts with customers. See Note 11 for the disaggregation of revenue by geographic region.

	For the Three Months Ended March 31,
	2022		2021
Product		33,193		25,836
Transportation		4,061		2,499
License fees from Distribution Partners		197		207
Total product revenue		37,451		28,542
Installation and other services		835		923
		38,286		29,465

	For the Three Months Ended March 31,
	2022		2021
At a point in time		37,254		28,335
Over time		1,032		1,130
		38,286		29,465

Summary of contract liabilities

Contract Liabilities

	As at
	March 31, 2022		December 31, 2021		December 31, 2020
Customer deposits		5,311		1,959		1,292
Deferred revenue		457		461		527
Contract liabilities		5,768		2,420		1,819

Schedule of sales by industry

	For the Three Months Ended March 31,
	2022		2021
Commercial		24,044		16,144
Healthcare		6,964		6,487
Government		3,281		4,181
Education		2,965		1,523
License fees from Distribution Partners		197		207
Total product and transportation revenue		37,451		28,542
Installation and other services		835		923
		38,286		29,465