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Balance Sheet Account Details - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Product Information [Line Items]
Accounts receivable	$ 1,992,000		$ 2,775,000
Recovery of bad debt expense	28,000
Provision for bad debt expense	$ 0	$ 958,000
Ruhr-Universitay Bochum \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Concentration risk percentage	10.00%
Illumina \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Concentration risk percentage			17.30%
Quest Diagnositcs \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Concentration risk percentage			10.10%
Lineagen
Product Information [Line Items]
Accounts receivable	$ 284,000