v3.24.3
ASSET ACQUISITIONS AND BUSINESS COMBINATIONS (Narrative) (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 01, 2023
USD ($)
$ / shares
shares
Sep. 30, 2024
USD ($)
item
$ / shares
Jun. 30, 2024
USD ($)
item
Mar. 31, 2024
USD ($)
item
Sep. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
item
Dec. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
item
Sep. 30, 2024
USD ($)
$ / shares
shares
Sep. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
$ / shares
Business Acquisition [Line Items]                      
Research and development   $ 35,380     $ 29,329       $ 130,346 $ 71,758  
Contingent consideration liability   113,858             113,858   $ 139,358
Goodwill   1,431,666         $ 197,471   1,431,666   $ 1,434,540
Acquisition related costs   $ (3,617)     $ 45,625       $ 12,535 $ 52,693  
Customer Relationships & Other Intangibles [Member]                      
Business Acquisition [Line Items]                      
Weighted average amortization period   10 years 7 months 6 days             10 years 7 months 6 days   10 years 7 months 6 days
Developed Technology [Member]                      
Business Acquisition [Line Items]                      
Weighted average amortization period   8 years             8 years   8 years
Fibriant B.V. [Member]                      
Business Acquisition [Line Items]                      
Research and development       $ 12,600              
Contingent consideration payment       12,000              
Asset Acquisition, Consideration Transferred       12,000              
Achievement Of Certain Performance Obligation [Member] | Fibriant B.V. [Member]                      
Business Acquisition [Line Items]                      
Additional contingent consideration       $ 10,000              
Harvest Biologics, LLC [Member]                      
Business Acquisition [Line Items]                      
Purchase price, preliminary post-closing adjustments             $ 1,400        
Purchase price allocation finalization period             1 year        
Inventory acquired             $ 3,300        
Business combination, consideration transferred             30,000        
Goodwill             15,200        
Harvest Biologics, LLC [Member] | Customer Relationships & Other Intangibles [Member]                      
Business Acquisition [Line Items]                      
Intangible assets acquired             $ 10,500        
Weighted average amortization period             20 years        
Harvest Biologics, LLC [Member] | Developed Technology [Member]                      
Business Acquisition [Line Items]                      
Intangible assets acquired             $ 2,400        
Weighted average amortization period             8 years        
Series of Individually Immaterial Business Acquisitions [Member]                      
Business Acquisition [Line Items]                      
Number of acquisitions | item   1 1 1   1   1      
Identifiable Assets           $ 400          
Inventory acquired           1,000          
Weighted average amortization period       10 years              
Goodwill       $ 17,900              
Payments to Acquire Businesses, Gross   $ 100 $ 100 500   $ 1,400          
Business combination, consideration transferred               $ 200      
Contingent consideration liability   $ 1,600 $ 1,900           $ 1,600    
Contingent payments, performance period   5 years 5 years         10 years      
Goodwill   $ 1,700 $ 2,000         $ 4,600 $ 1,700    
Contingent consideration payment       19,100       $ 4,400      
Fair value adjustments to inventory       $ 1,800              
NuVasive Merger Agreement [Member]                      
Business Acquisition [Line Items]                      
Common Stock, Par or Stated Value Per Share | $ / shares   $ 0.001             $ 0.001    
NuVasive [Member]                      
Business Acquisition [Line Items]                      
Future services amount, not yet expensed                 $ 29,400    
Acquisition related costs recognized                 15,400    
Inventory acquired $ 570,300 $ 575,003             575,003   $ 558,034
Payments to Acquire Businesses, Gross 2,603,836               2,603,836   2,603,836
Business combination, consideration transferred 2,603,836                    
Goodwill 924,155 $ 1,209,940             1,209,940   $ 1,234,475
Acquisition related costs                 12,900    
Repaid debt outstanding 420,762               420,800    
Fair value of assumed equity awards $ 28,635               28,600    
Awards vested post acquisition                 $ 42,300    
Common Stock, Par or Stated Value Per Share | $ / shares $ 0.001                    
Convertible Debt [Member]                      
Business Acquisition [Line Items]                      
Stated interest rate 0.375% 0.375%             0.375%   0.375%
Common Class A [Member]                      
Business Acquisition [Line Items]                      
Common Stock, Par or Stated Value Per Share | $ / shares   $ 0.001             $ 0.001   $ 0.001
Conversion of Stock, Shares Converted | shares                 1    
Common Class A [Member] | NuVasive Merger Agreement [Member]                      
Business Acquisition [Line Items]                      
Conversion of Stock, Shares Converted | shares 0.75               0.75