Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue recognized									$ 3,300
Agreement term									4 years
Deferred revenue, noncurrent	$ 40,058								$ 40,058
Deferred revenue	44,189				$ 1,420				44,189	$ 1,420
Deferred revenue, current portion	4,131				1,420				4,131	1,420
Total revenues	66,965	$ 65,280	$ 63,069	$ 62,340	52,050	$ 55,910	$ 52,283	$ 49,382	257,654	209,625	$ 212,512
Deferred revenue, long-term portion	40,058								40,058
Deferred revenue, current portion	4,131				$ 1,420				4,131	1,420
Product
Revenue recognized									3,300	4,900	0
Total revenues									240,366	203,777	209,406
Licensing and other
Total revenues									17,288	$ 5,848	$ 3,106
Evercord
Deferred revenue, noncurrent	2,900								2,900
Deferred revenue, current portion	2,100								2,100
Deferred revenue, long-term portion	2,900								2,900
Deferred revenue, current portion	2,100								$ 2,100
Evercord | Processing and storage services | Minimum
Billing collection period (in months)									6 months
Evercord | Processing and storage services | Maximum
Billing collection period (in months)									18 months
Evercord | Processing and storage services | Alternate
Billing collection period (in months)									12 months
Qiagen
Revenue recognized				$ 5,500					$ 5,800
Agreement term									10 years
Revenue, remaining performance obligation	9,200								$ 9,200
Deferred revenue, noncurrent	37,200								37,200
Initial transaction price	15,000								15,000
Deferred revenue, current portion	2,000								2,000
Deferred revenue, long-term portion	37,200								37,200
Deferred revenue, current portion	2,000								2,000
Qiagen | License fee
Revenue, remaining performance obligation	$ 40,000								$ 40,000