Other Significant Balance Sheet Accounts - Schedule of Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]
Reagents and supplies	$ 21,950	$ 16,491
Prepaid expenses	5,348	3,682
Marketable securities interest receivable	2,724	1,016
Other receivable	1,807	17,810
Contract assets	206	1,379
Prepaid income taxes		14
Total	$ 32,035	$ 40,392