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Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2022
Fair Value of Financial Instruments  
Summary of marketable securities portfolio

The following is a summary of our marketable security portfolio for the periods presented (in thousands):

Net

Amortized

Unrealized

Estimated

    

Cost

    

Losses

    

Fair Value

 

March 31, 2022

    

    

    

Debt securities (government)

$

291,613

$

(4,212)

$

287,401

December 31, 2021

Debt securities (government)

$

291,871

$

(1,119)

$

290,752

Schedule of fair value of assets measured on recurring basis

The following fair value hierarchy table presents information about each major category of our financial assets measured at fair value on a recurring basis (in thousands):

Fair Value Measurement at Reporting Date Using:

Quoted Prices in

Significant Other

Significant

Active Markets for

Observable

Unobservable

Identical Assets

Inputs

Inputs

Balance as of

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

March 31, 2022

 

Cash and cash equivalents

$

2,256,759

$

$

$

2,256,759

Debt securities (government)

 

 

287,401

 

 

287,401

Long term investments (Note 7)

 

174,681

 

 

 

174,681

Total assets

$

2,431,440

$

287,401

$

$

2,718,841

Fair Value Measurement at Reporting Date Using:

Quoted Prices in

Significant Other

Significant

Active Markets for

Observable

Unobservable

Identical Assets

Inputs

Inputs

Balance as of

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

December 31, 2021

 

Cash and cash equivalents

$

2,057,440

$

$

$

2,057,440

Debt securities (government)

 

290,752

 

290,752

Long term investments (Note 7)

 

221,266

 

 

 

221,266

Total assets

$

2,278,706

$

290,752

$

$

2,569,458

Schedule of fair value of liabilities measured on recurring basis

Fair Value Measurement at Reporting Date Using:

Quoted Prices in

Significant Other

Significant

Active Markets for

Observable

Unobservable

Identical Assets

Inputs

Inputs

Balance as of

    

(Level 1)

    

(Level 2)

    

(Level 3)

    

December 31, 2021

 

Cash and cash equivalents

$

2,057,440

$

$

$

2,057,440

Debt securities (government)

 

290,752

 

290,752

Long term investments (Note 7)

 

221,266

 

 

 

221,266

Total assets

$

2,278,706

$

290,752

$

$

2,569,458

Schedule of roll forward of Level 3 liabilities

The following is a roll forward of our Level 3 liabilities (in thousands):

2022

Balance at January 1,

$

244,000

Contingent consideration earned during the period but not yet paid

(8,382)

Change in fair value of contingent consideration

6,382

Balance at March 31,

$

242,000