SEGMENT REPORTING - Segment Reporting Information, by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenue	$ 385,788	$ 602,463	$ 1,072,054
Cost of sales	110,601	157,840	296,204
Equity compensation	7,639	7,363	8,188
Other income	(8,574)	(909)	(2,395)
Provision for income taxes	13,033	1,696	29,382
Net income (loss)	(18,672)	2,091	99,415
Optavia Segment | Operating segments
Segment Reporting Information [Line Items]
Revenue	385,788	602,463	1,072,054
Cost of sales	110,601	157,840	296,204
Selling, marketing, and after sales support	187,986	304,481	501,188
Distribution	17,767	37,710	40,534
Technology	43,744	49,939	56,595
Administrative and corporate support functions	32,264	42,252	42,943
Equity compensation	7,639	7,363	8,188
Other income	(8,574)	(909)	(2,395)
Provision for income taxes	13,033	1,696	29,382
Net income (loss)	(18,672)	2,091	99,415
Optavia Segment | Adjustments and reconciling items
Segment Reporting Information [Line Items]
Net income (loss)	$ 0	$ 0	$ 0