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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2023
Income Tax Disclosure [Abstract]  
Schedule of Loss Before Income Taxes in the US and Globally
The Company's loss before income taxes in the US and globally was as follows (in thousands):
 Years Ended December 31,
202320222021
US$(666,181)$(406,262)$(348,845)
Foreign(80,831)(73,889)(87,567)
Total$(747,012)$(480,151)$(436,412)
Schedule of Components Income Tax Provision (Benefit)
The Company's income tax provision (benefit) consisted of the following (in thousands):
 Years Ended December 31,
 202320222021
Current:   
Federal$— $— $— 
State378 269 104 
Foreign2,231 1,345 1,585 
2,609 1,614 1,689 
Deferred:   
Federal(13)13 (2,835)
State(41)(244)(612)
Foreign— — — 
(54)(231)(3,447)
Total$2,555 $1,383 $(1,758)
Schedule of Reconciliation Between Federal Statutory Tax Rate and Effective Tax Rate
The reconciliation between the federal statutory tax rates and the Company's effective tax rate is as follows:
 Years Ended December 31,
 202320222021
Statutory federal tax rate21 %21 %21 %
Permanent items(1)%— %(1)%
State income taxes, net of federal benefit%%%
R&D and other tax credits%%%
Foreign income taxes(1)%— %(1)%
Change in valuation allowance(21)%(22)%(27)%
Asset acquisitions (see Note 18)(3)%— %— %
Stock-based compensation(1)%(2)%— %
Other— %(1)%— %
Effective tax rate— %— %— %
Schedule of Components of Deferred Tax Assets and Liabilities The components of the deferred tax assets and liabilities consist of the following:
As of December 31,
 20232022
Deferred tax assets:  
Net operating loss carryforwards$563,869 $499,029 
General business credits182,006 157,181 
Product license3,867 4,317 
Inventory2,341 1,470 
Lease liabilities12,000 12,965 
Stock-based compensation27,916 23,724 
Capitalized R&D115,299 56,275 
Other19,286 15,001 
Deferred tax assets926,584 769,962 
Valuation allowance(904,078)(745,135)
Deferred tax assets, net of valuation allowance$22,506 $24,827 
Deferred tax liabilities:  
Intangibles$(13,006)$(13,739)
Right-of-use assets(9,585)(11,227)
Deferred tax liabilities$(22,591)$(24,966)
  Net deferred tax liabilities$(85)$(139)
Schedule of Unrecognized Tax Benefits The following table summarizes the gross amounts of unrecognized tax benefits (in thousands):
20232022
Balance as of January 1,$11,539 $7,382 
Additions related to prior period tax positions230 1,564 
Reductions related to prior period tax positions— — 
Additions related to current period tax positions2,984 2,593 
Balance as of December 31,$14,753 $11,539