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Collaborations (Tables)
 6 Months Ended
Jun. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]  
Summary of Changes in Accounts Receivable and Contract Liabilities The following table presents changes in the Company’s accounts receivable and contract liabilities during the six months ended June 30, 2020 and 2019 (in thousands):

 

 

 

Balance at

Beginning of

Period

 

 

Additions

 

 

Deductions

 

 

Balance at End

of Period

 

Six Months Ended June 30, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accounts receivable

 

$

4,620

 

 

$

101,049

 

 

$

(101,805

)

 

$

3,864

 

Contract liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deferred revenue

 

$

28,810

 

 

$

87,477

 

 

$

(15,608

)

 

$

100,679

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at

Beginning of

Period

 

 

Additions

 

 

Deductions

 

 

Balance at End

of Period

 

Six Months Ended June 30, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accounts receivable

 

$

7,547

 

 

$

7,779

 

 

$

(11,138

)

 

$

4,188

 

Contract liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deferred revenue

 

$

55,932

 

 

$

2,000

 

 

$

(15,772

)

 

$

42,160

 

 
Summary of Revenues Recognized Resulting From Changes in Contract Liability Balance

During the six months ended June 30, 2020 and 2019, the Company recognized the following revenues as a result of changes in the contract liability balance (in thousands):

 

 

 

Six Months Ended June 30,

 

Revenue recognized in the period from:

 

2020

 

 

2019

 

Amounts included in the contract liability at the beginning of the period

 

$

5,674

 

 

$

15,772