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Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
New Accounting Pronouncement, Early Adoption [Line Items]
Long-term debt	$ 19,454		$ 19,454
Restricted cash	200		200		$ 200
Revenue recognized in previous periods	2,500	$ 3,700	2,600	$ (2,500)
Advertising expense	500	1,300	$ 1,200	2,200
Number of operating segments | segment			1
Other Long Term Debt
New Accounting Pronouncement, Early Adoption [Line Items]
Debt instrument					800
Restricted stock units
New Accounting Pronouncement, Early Adoption [Line Items]
Stock options, vesting period			4 years
2017 Term loan | Level 2 | Recurring
New Accounting Pronouncement, Early Adoption [Line Items]
Long-term debt	18,600		$ 18,600		28,300
Debt instrument	19,000		19,000		$ 26,900
Shipping and Handling
New Accounting Pronouncement, Early Adoption [Line Items]
Cost of revenue	$ 600	$ 700	$ 1,900	$ 2,100
Revenue | Product Concentration Risk | AVISE CTD Test
New Accounting Pronouncement, Early Adoption [Line Items]
Percent of total revenue	89.00%	87.00%	88.00%	84.00%
Revenue | Supplier Concentration Risk | Two Major Suppliers
New Accounting Pronouncement, Early Adoption [Line Items]
Percent of total revenue	98.00%	97.00%	97.00%	97.00%

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