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Collaborations (Tables)
 9 Months Ended
Sep. 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 nine months ended September 30, 2020 and 2019 (in thousands):

 

 

 

Balance at

Beginning of

Period

 

 

Additions

 

 

Deductions

 

 

Balance at End

of Period

 

Nine Months Ended September 30, 2020

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accounts receivable

 

$

4,620

 

 

$

102,203

 

 

$

(105,606

)

 

$

1,217

 

Contract liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deferred revenue

 

$

28,810

 

 

$

87,477

 

 

$

(36,673

)

 

$

79,614

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at

Beginning of

Period

 

 

Additions

 

 

Deductions

 

 

Balance at End

of Period

 

Nine Months Ended September 30, 2019

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accounts receivable

 

$

7,547

 

 

$

11,379

 

 

$

(15,327

)

 

$

3,599

 

Contract liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deferred revenue

 

$

55,932

 

 

$

3,000

 

 

$

(23,788

)

 

$

35,144

 

 
Summary of Revenues Recognized Resulting From Changes in Contract Liability Balance

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

 

 

 

Nine Months Ended September 30,

 

Revenue recognized in the period from:

 

2020

 

 

2019

 

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

 

$

10,249

 

 

$

23,788