REVENUE - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total revenue	$ 46,122,796	$ 35,617,998	$ 110,317,117	$ 90,437,598
Product revenue
Disaggregation of Revenue [Line Items]
Total revenue	39,528,383	30,815,251	94,240,296	77,295,463
Paint protection film
Disaggregation of Revenue [Line Items]
Total revenue	31,977,210	26,527,586	75,996,444	66,150,360
Window film
Disaggregation of Revenue [Line Items]
Total revenue	6,302,364	3,522,815	15,347,270	8,526,886
Other
Disaggregation of Revenue [Line Items]
Total revenue	1,248,809	764,850	2,896,582	2,618,217
Service revenue
Disaggregation of Revenue [Line Items]
Total revenue	6,594,413	4,802,747	16,076,821	13,142,135
Software
Disaggregation of Revenue [Line Items]
Total revenue	889,709	859,432	2,551,177	2,378,944
Cutbank credits
Disaggregation of Revenue [Line Items]
Total revenue	2,304,651	1,957,224	5,529,773	5,487,320
Installation labor
Disaggregation of Revenue [Line Items]
Total revenue	3,268,399	1,843,936	7,681,420	4,790,279
Training
Disaggregation of Revenue [Line Items]
Total revenue	$ 131,654	$ 142,155	$ 314,451	$ 485,592