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NATURE OF OPERATIONS - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue
Product sales	$ 37,008	$ 48,678	$ 122,505	$ 155,563
Dealer commission, reimbursed dealer expenses and other similar costs	3,285	2,711	$ 9,857	8,964
Annual curtail payment period			2 years
Period required to pay off remaining principle balance			3 years
Selling, general and administrative expenses
Disaggregation of Revenue
Warranty and contract costs	666	861	$ 2,024	1,941
Revenue from contract with customer product and service benchmark | Customer concentration risk | Pertaining to independent third parties
Disaggregation of Revenue
Product sales	$ 601	$ 5,226	$ 10,134	$ 11,420
Concentration risk percentage	1.70%	10.70%	8.80%	7.30%
Revenue from contract with customer product and service benchmark | Customer concentration risk | Another independent third party and affiliates
Disaggregation of Revenue
Product sales	$ 3,202	$ 2,307	$ 4,894	$ 3,711
Concentration risk percentage	9.10%	4.70%	4.20%	2.40%
Minimum
Disaggregation of Revenue
Term of lease agreement	96 months		96 months
Maximum
Disaggregation of Revenue
Term of lease agreement	120 months		120 months

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