INCOME TAXES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Income tax benefit	$ 9,064,000	$ 246,881,000	$ 5,458,000
Deferred tax asset valuation allowance	419,356,000	262,238,000
Deferred tax liability	19,713,000	28,782,000
Increase (decrease) in valuation allowance	$ 157,100,000	$ (31,200,000)
Effective tax rate	1.30%	29.30%	0.60%
Unrecognized tax benefit that would impact effective tax rate	$ 28,300,000	$ 21,800,000	$ 16,600,000
Accrued interest or penalties	0	0	0
Recognized interest or penalties	0	0	0
Deferred tax asset
Operating Loss Carryforwards [Line Items]
Valuation allowances established	159,919,000	206,574,000	94,589,000
Acquisition and purchase accounting	21,000	239,233,000	(5,558,000)
Deferred tax asset | Thrive
Operating Loss Carryforwards [Line Items]
Acquisition and purchase accounting	239,200,000
Deferred tax asset | Genomic Health Inc
Operating Loss Carryforwards [Line Items]
Acquisition and purchase accounting		$ 239,200,000	$ (5,600,000)
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	475,200,000
Operating loss carryforwards with no expiration date	300,200,000
Operating loss carryforwards with expiration date	175,000,000
Federal | Research
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	59,200,000
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	70,900,000
State | Research
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	27,800,000
State | Research | California
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards	16,800,000
Foreign
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 7,200,000