SEGMENTS AND GEOGRAPHIC INFORMATION - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
ACO REACH revenue	$ 124,040	$ 171,811
Investment income	926	203
Total revenue	215,787	245,095
Medical costs	160,894	196,874
Compensation and fringe	31,409	48,077
Professional fees	6,694	6,500
Other administrative	10,570	12,184
Operating costs	48,673	66,761
Depreciation and amortization	3,559	4,562
Total operating expenses	213,126	268,197
Operating income (loss)	2,661	(23,102)
Total unaffiliated revenue
Segment Reporting Information [Line Items]
Total revenue	215,787	245,095
Affiliated revenue
Segment Reporting Information [Line Items]
Total revenue	0	0
Capitated revenue
Segment Reporting Information [Line Items]
Revenue:	80,987	61,466
Service revenue
Segment Reporting Information [Line Items]
Revenue:	9,834	11,615
Corporate & Eliminations
Segment Reporting Information [Line Items]
ACO REACH revenue	0	0
Investment income	569	203
Total revenue	(2,340)	(2,424)
Medical costs	(2,909)	(2,627)
Compensation and fringe	10,966	22,043
Professional fees	2,679	3,108
Other administrative	3,501	4,258
Operating costs	17,146	29,409
Depreciation and amortization	777	776
Total operating expenses	15,014	27,558
Operating income (loss)	(17,354)	(29,982)
Corporate & Eliminations | Total unaffiliated revenue
Segment Reporting Information [Line Items]
Total revenue	569	203
Corporate & Eliminations | Affiliated revenue
Segment Reporting Information [Line Items]
Total revenue	(2,909)	(2,627)
Corporate & Eliminations | Capitated revenue
Segment Reporting Information [Line Items]
Revenue:	0	0
Corporate & Eliminations | Service revenue
Segment Reporting Information [Line Items]
Revenue:	0	0
NeueCare | Operating Segments
Segment Reporting Information [Line Items]
ACO REACH revenue	0	0
Investment income	357	0
Total revenue	90,517	73,623
Medical costs	37,518	27,436
Compensation and fringe	18,297	23,514
Professional fees	3,036	2,766
Other administrative	5,877	6,309
Operating costs	27,210	32,589
Depreciation and amortization	2,782	3,786
Total operating expenses	67,510	63,811
Operating income (loss)	23,007	9,812
NeueCare | Operating Segments | Total unaffiliated revenue
Segment Reporting Information [Line Items]
Total revenue	87,608	70,996
NeueCare | Operating Segments | Affiliated revenue
Segment Reporting Information [Line Items]
Total revenue	2,909	2,627
NeueCare | Operating Segments | Capitated revenue
Segment Reporting Information [Line Items]
Revenue:	80,987	61,466
NeueCare | Operating Segments | Service revenue
Segment Reporting Information [Line Items]
Revenue:	6,264	9,530
NeueSolutions | Operating Segments
Segment Reporting Information [Line Items]
ACO REACH revenue	124,040	171,811
Investment income	0	0
Total revenue	127,610	173,896
Medical costs	126,285	172,065
Compensation and fringe	2,146	2,520
Professional fees	979	626
Other administrative	1,192	1,617
Operating costs	4,317	4,763
Depreciation and amortization	0	0
Total operating expenses	130,602	176,828
Operating income (loss)	(2,992)	(2,932)
NeueSolutions | Operating Segments | Total unaffiliated revenue
Segment Reporting Information [Line Items]
Total revenue	127,610	173,896
NeueSolutions | Operating Segments | Affiliated revenue
Segment Reporting Information [Line Items]
Total revenue	0	0
NeueSolutions | Operating Segments | Capitated revenue
Segment Reporting Information [Line Items]
Revenue:	0	0
NeueSolutions | Operating Segments | Service revenue
Segment Reporting Information [Line Items]
Revenue:	$ 3,570	$ 2,085