Deferred Revenue - Schedule of Deferred Revenue by Revenue Classification (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current deferred revenue
Total current deferred revenue	$ 78,348	$ 73,319
Non-current deferred revenue
Total non-current deferred revenue	144,356	163,618
Total current and non-current deferred revenue	222,704	236,937
Sequencing Revenue
Current deferred revenue
Total current deferred revenue	17,191	15,463
Non-current deferred revenue
Total non-current deferred revenue	662	724
Development Revenue
Current deferred revenue
Total current deferred revenue	61,157	57,856
Non-current deferred revenue
Total non-current deferred revenue	$ 143,694	$ 162,894