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Commitment and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Rent expense	$ 600,000	$ 500,000
Purchase obligation, due in next twelve months	4,100,000
Purchase obligation, due in second year	$ 6,000,000.0
Annual increase in purchase commitments	15.00%
Minimum | Licensing Agreements
Loss Contingencies [Line Items]
Royalty obligation, percent of net sales	2.00%
Maximum | Licensing Agreements
Loss Contingencies [Line Items]
Royalty obligation, percent of net sales	3.00%
Prometheus Laboratories
Loss Contingencies [Line Items]
Remaining milestone obligation	$ 2,000,000.0
Remaining milestone obligation, fair value	$ 0	$ 0
Royalty obligation, percent of net sales	2.50%
Future minimum royalty commitment	$ 1,200,000
Advance royalties payment	$ 100,000
Office and Laboratory
Loss Contingencies [Line Items]
Operating leases, renewal term	5 years
Office
Loss Contingencies [Line Items]
Operating leases, renewal term	5 years

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- Definition

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- Definition

The amount the entity has committed to make for future royalty guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 440
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473578&loc=d3e63223-108013

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