RELATED PARTY TRANSACTIONS - Related party disclosures by income statement grouping (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Related Party Transaction [Line Items]
Revenue	$ 31,970	$ 22,414	$ 58,691	$ 42,057
Related Party
Related Party Transaction [Line Items]
Operating expenses — Research and development — related parties	5,469	6,399	10,704	11,751
Operating expenses — General and administrative — related parties	52	52	103	103
Related Party \| Screening Revenue
Related Party Transaction [Line Items]
Revenue	108	164	237	416
Cost of revenue—related parties	3,779	2,213	6,511	3,792
Related Party \| Illumina, Inc.
Related Party Transaction [Line Items]
Operating expenses — Research and development — related parties	5,310	6,386	10,112	11,166
Operating expenses — General and administrative — related parties	52	52	103	103
Related Party \| Cost of screening revenue (exclusive of amortization of intangible assets) \| Illumina, Inc.
Related Party Transaction [Line Items]
Cost of revenue—related parties	3,457	2,213	6,126	3,792
Related Party \| Cost of development services revenue \| Illumina, Inc.
Related Party Transaction [Line Items]
Cost of revenue—related parties	$ 71	$ 36	$ 116	$ 60

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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