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REVENUE - Schedule of Disaggregated Revenue by Payor Type and Major Service (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 [Line Items]
Revenue, net	$ 124,604	$ 103,875	$ 360,170	$ 298,304
Contracted third-party payors
Disaggregation of Revenue [Line Items]
Revenue, net	$ 67,336	$ 56,016	$ 196,566	$ 163,218
Contracted third-party payors | Revenue | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration of credit risk (as a percent)	54.00%	54.00%	55.00%	55.00%
Centers for Medicare and Medicaid
Disaggregation of Revenue [Line Items]
Revenue, net	$ 31,006	$ 27,253	$ 88,369	$ 72,074
Centers for Medicare and Medicaid | Revenue | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration of credit risk (as a percent)	25.00%	26.00%	25.00%	24.00%
Healthcare institutions
Disaggregation of Revenue [Line Items]
Revenue, net	$ 18,065	$ 14,883	$ 52,060	$ 45,632
Healthcare institutions | Revenue | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration of credit risk (as a percent)	14.00%	14.00%	14.00%	15.00%
Non-contracted third-party payors
Disaggregation of Revenue [Line Items]
Revenue, net	$ 8,197	$ 5,723	$ 23,175	$ 17,380
Non-contracted third-party payors | Revenue | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration of credit risk (as a percent)	7.00%	6.00%	6.00%	6.00%

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