Revenue Recognition - Deferred Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	$ 8,782	$ 37,784
Revenue recognized	17,800
Deferred revenue, current portion	10,777	7,404
Deferred revenue, Long-term	20,001	21,318
Deferred revenue	30,778	$ 28,722	$ 72,930
BGI Genomics
Revenue recognized	4,500
Deferred revenue, current portion	100
Deferred revenue, Long-term	20,000
Foundation Medicine ("FMI")
Revenue recognized	16,800
BGI Genomics and Foundation Medicine ("FMI")
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	5,400
Revenue recognized	6,400
Genetic testing services
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	3,300
Revenue recognized	11,400
Deferred revenue, current portion	$ 10,700