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FINANCIAL INSTRUMENTS - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Assets    
Cash and cash equivalents $ 209,287 $ 325,089
Short-term restricted cash 300 300
Long-term restricted cash 2,422 2,922
Total assets measured at fair value 832,584 775,540
Liabilities    
Contingent consideration 186,325 172,094
Total liabilities measured at fair value 186,325 172,094
Investments:    
Assets    
Investments: 620,575 447,229
Commercial paper    
Assets    
Investments: 94,124 127,302
Corporate debt securities    
Assets    
Investments: 74,584 49,491
U.S. government & agency securities    
Assets    
Investments: 451,867 270,436
Level 1    
Assets    
Cash and cash equivalents 93,902 137,636
Short-term restricted cash 300 300
Long-term restricted cash 2,422 2,922
Total assets measured at fair value 96,624 140,858
Liabilities    
Contingent consideration 0 0
Total liabilities measured at fair value 0 0
Level 1 | Investments:    
Assets    
Investments: 0 0
Level 1 | Commercial paper    
Assets    
Investments: 0 0
Level 1 | Corporate debt securities    
Assets    
Investments: 0 0
Level 1 | U.S. government & agency securities    
Assets    
Investments: 0 0
Level 2    
Assets    
Cash and cash equivalents 115,385 187,453
Short-term restricted cash 0 0
Long-term restricted cash 0 0
Total assets measured at fair value 735,960 634,682
Liabilities    
Contingent consideration 0 0
Total liabilities measured at fair value 0 0
Level 2 | Investments:    
Assets    
Investments: 620,575 447,229
Level 2 | Commercial paper    
Assets    
Investments: 94,124 127,302
Level 2 | Corporate debt securities    
Assets    
Investments: 74,584 49,491
Level 2 | U.S. government & agency securities    
Assets    
Investments: 451,867 270,436
Level 3    
Assets    
Cash and cash equivalents 0 0
Short-term restricted cash 0 0
Long-term restricted cash 0 0
Total assets measured at fair value 0 0
Liabilities    
Contingent consideration 186,325 172,094
Total liabilities measured at fair value 186,325 172,094
Level 3 | Investments:    
Assets    
Investments: 0 0
Level 3 | Commercial paper    
Assets    
Investments: 0 0
Level 3 | Corporate debt securities    
Assets    
Investments: 0 0
Level 3 | U.S. government & agency securities    
Assets    
Investments: $ 0 $ 0