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Deferred Revenue (Tables)
9 Months Ended
Sep. 30, 2021
Revenue From Contract With Customer [Abstract]  
Schedule of Deferred Revenue by Revenue Classification

Deferred revenue by revenue classification as of September 30, 2021 and December 31, 2020 was as follows (in thousands):

 

 

 

September 30, 2021

 

 

December 31, 2020

 

Current deferred revenue

 

 

 

 

 

 

 

 

Sequencing

 

$

18,912

 

 

$

15,463

 

Development

 

 

61,042

 

 

 

57,856

 

Total current deferred revenue

 

 

79,954

 

 

 

73,319

 

Non-current deferred revenue

 

 

 

 

 

 

 

 

Sequencing

 

 

126

 

 

 

724

 

Development

 

 

110,512

 

 

 

162,894

 

Total non-current deferred revenue

 

 

110,638

 

 

 

163,618

 

Total current and non-current deferred revenue

 

$

190,592

 

 

$

236,937

 

Schedule of Changes in Deferred Revenue

Changes in deferred revenue during the nine months ended September 30, 2021 were as follows (in thousands):

 

Deferred revenue balance at December 31, 2020

 

$

236,937

 

Additions to deferred revenue during the period

 

 

26,720

 

Revenue recognized during the period

 

 

(73,065

)

Deferred revenue balance at September 30, 2021

 

$

190,592