SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment Useful Lives (Details)	Dec. 31, 2023
Computers
Property, Plant and Equipment [Line Items]
Useful life	3 years
Demo trucks
Property, Plant and Equipment [Line Items]
Useful life	2 years
Vehicles
Property, Plant and Equipment [Line Items]
Useful life	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful life	7 years
Minimum | Software
Property, Plant and Equipment [Line Items]
Useful life	3 years
Minimum | Equipment
Property, Plant and Equipment [Line Items]
Useful life	3 years
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Useful life	20 years
Maximum | Software
Property, Plant and Equipment [Line Items]
Useful life	5 years
Maximum | Equipment
Property, Plant and Equipment [Line Items]
Useful life	20 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Useful life	40 years