RESTRUCTURING CHARGES - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 18,521	$ 3,064	$ 30,999
Platform
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0	(3)
Devices
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0	6
Research and development
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	(1,366)	2,327	(137)
Sales and marketing
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	16,988	175	26,057
General and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	2,899	562	5,076
Employee Terminations
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0		947
Employee Terminations | Platform
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0		(3)
Employee Terminations | Devices
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0		1
Employee Terminations | Research and development
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0		368
Employee Terminations | Sales and marketing
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0		697
Employee Terminations | General and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0		(116)
Facilities Exit Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	909	194	934
Facilities Exit Costs | Platform
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0	0
Facilities Exit Costs | Devices
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0	0
Facilities Exit Costs | Research and development
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	52	194	98
Facilities Exit Costs | Sales and marketing
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	717	0	719
Facilities Exit Costs | General and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	140	0	117
Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	17,612	2,870	29,118
Asset Impairment Charges | Platform
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0	0
Asset Impairment Charges | Devices
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0	5
Asset Impairment Charges | Research and development
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	(1,418)	2,133	(603)
Asset Impairment Charges | Sales and marketing
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	16,271	175	24,641
Asset Impairment Charges | General and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 2,759	$ 562	$ 5,075