Deferred Revenue - Schedule of Deferred Revenue by Revenue Classification (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current deferred revenue
Total current deferred revenue	$ 79,954	$ 73,319
Non-current deferred revenue
Total non-current deferred revenue	110,638	163,618
Total current and non-current deferred revenue	190,592	236,937
Sequencing Revenue
Current deferred revenue
Total current deferred revenue	18,912	15,463
Non-current deferred revenue
Total non-current deferred revenue	126	724
Development Revenue
Current deferred revenue
Total current deferred revenue	61,042	57,856
Non-current deferred revenue
Total non-current deferred revenue	$ 110,512	$ 162,894