Revenue Recognition - Deferred Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	$ 10,564	$ 8,782
Revenue recognized	19,500
Deferred revenue, current portion	16,612	10,777
Deferred revenue, Long-term	19,128	20,001
Deferred revenue	35,740	$ 30,778	$ 28,722
BGI Genomics
Revenue recognized	44,000
Deferred revenue, current portion	1,200
Deferred revenue, Long-term	17,600
Deferred revenue	18,800
Foundation Medicine ("FMI")
Revenue recognized	24,300
Deferred revenue, current portion	1,700
Deferred revenue, Long-term	1,500
Deferred revenue	3,200
BGI Genomics and Foundation Medicine ("FMI")
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	1,300
Revenue recognized	1,200
Genetic testing services
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	9,300
Revenue recognized	18,300
Deferred revenue, current portion	$ 13,700