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Pay vs Performance Disclosure - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table
Summary Compensation Table Total for PEO ($)(1)
Compensation Actually Paid to PEO ($)(2)
Average Summary Compensation Table Total for Non-PEO NEOs ($)(1)
Average Compensation Actually Paid to Non-PEO NEOs ($)(2)
Value of Initial Fixed $100 Investment Based on:
Year
Total Shareholder Return ($)(3)
Peer Group Total Shareholder Return ($)(3)
Net Income (Loss) ($)(4)
(in thousands)
Total Revenue
($)(5) (in thousands)
(a)(b)(c)(d)(e)(f)(g)(h)(i)
20256,786,771 13,166,820 2,381,659 4,384,636 57.93 124.75 (24,158)344,229 
20246,941,074 9,967,499 2,400,129 3,322,154 39.69 93.49 18,245 332,069 
20231,605,984 779,818 845,945 496,508 32.14 94.03 (57,466)219,788 
20227,552,577 3,081,353 2,670,395 990,266 35.06 89.90 (67,138)137,039 
20216,521,857 2,127,860 2,813,079 1,240,785 63.84 100.02 (31,292)94,085 
        
Company Selected Measure Name Revenue        
Named Executive Officers, Footnote Mr. Maetzold was our “PEO” for each of the years 2021 through 2025. In this disclosure, we refer to our NEOs other than Mr. Maetzold in any fiscal year as our “Other NEOs” or our “Non-PEO NEOs.” Frank Stokes, Kristen M. Oelschlager and Tobin W. Juvenal were “Other NEOs” for each of the years 2021 through 2025. The dollar amounts are the total compensation for the covered fiscal year as reported in the Summary Compensation Table pursuant to Regulation S-K, item 402(c)(2)(x), as described under “—Summary Compensation Table.” In the case of the Other NEOs, the amounts reported are an average of the total compensation for the covered fiscal years.        
Peer Group Issuers, Footnote For each fiscal year disclosed the cumulative total shareholder return and peer group cumulative total shareholder return is calculated in the same manner as Item 201(e) of Regulation S-K assuming an initial investment of $100 on December 31, 2020. The peer group used in this calculation is the NASDAQ Biotechnology Total Return Index.        
PEO Total Compensation Amount $ 6,786,771 $ 6,941,074 $ 1,605,984 $ 7,552,577 $ 6,521,857
PEO Actually Paid Compensation Amount $ 13,166,820 9,967,499 779,818 3,081,353 2,127,860
Adjustment To PEO Compensation, Footnote For each year, in determining both the compensation actually paid (“CAP”) for our PEO and the average CAP for our Other NEOs, we deducted or added back the following amounts from or to the total amounts of compensation reported in column (b) and column (d) for such year.
Mr. Maetzold’s CAP is calculated as follows:
Year
Total Compensation from Summary Compensation Table
($)
Deduct: Stock Awards Value from Summary Compensation Table
($)
Deduct: Option Awards Value from Summary Compensation Table
($)
Add: Change in Fair Value of Awards Vesting During the Year
($)*
Add: Change in Fair Value of Outstanding and Unvested Equity Awards
($)*
Add: Year-End Fair Value of Equity Awards Granted During the Year
($)*
Compensation Actually Paid
($)
20256,786,771 4,977,208 — 331,938 2,315,765 8,709,554 13,166,820 
        
Non-PEO NEO Average Total Compensation Amount $ 2,381,659 2,400,129 845,945 2,670,395 2,813,079
Non-PEO NEO Average Compensation Actually Paid Amount $ 4,384,636 3,322,154 496,508 990,266 1,240,785
Adjustment to Non-PEO NEO Compensation Footnote For each year, in determining both the compensation actually paid (“CAP”) for our PEO and the average CAP for our Other NEOs, we deducted or added back the following amounts from or to the total amounts of compensation reported in column (b) and column (d) for such year.
Other NEOs average CAP are as follows:
YearTotal Compensation from Summary Compensation Table
($)		Deduct: Stock Awards Value from Summary Compensation Table
($)		Deduct: Option Awards Value from Summary Compensation Table
($)		Add: Change in Fair Value of Awards Vesting During the Year
($)*		Add: Change in Fair Value of Outstanding and Unvested Equity Awards
($)*		Add: Year-End Fair Value of Equity Awards Granted During the Year
($)*		Average Compensation Actually Paid
($)
20252,381,659 1,417,918 — 153,659 786,038 2,481,198 4,384,636 
*There were no other assumptions made in the valuation of equity awards that differs materially from those disclosed as of the grant date of such equity awards.
        
Compensation Actually Paid vs. Total Shareholder Return
The following chart shows the relationships between (a) the compensation actually paid to the PEO, (b) the average compensation actually paid to the Non-PEO NEOs included in the Summary Compensation Table and (c) our total shareholder return and the peer group total shareholder return.
3067
        
Compensation Actually Paid vs. Net Income
The following chart shows the relationships between (a) the compensation actually paid to the PEO, (b) the average compensation actually paid to the Non-PEO NEOs in the Summary Compensation Table and (c) our net income (loss).
3296
        
Compensation Actually Paid vs. Company Selected Measure
The following chart shows the relationships between (a) the compensation actually paid to the PEO, (b) the average compensation actually paid to the Non-PEO NEOs included in the Summary Compensation Table and (c) our company-selected measure of total revenue.
2778
        
Total Shareholder Return Vs Peer Group
The following chart shows the relationships between (a) the compensation actually paid to the PEO, (b) the average compensation actually paid to the Non-PEO NEOs included in the Summary Compensation Table and (c) our total shareholder return and the peer group total shareholder return.
3067
        
Tabular List, Table
The following performance measures are the Company’s most important performance measures used by us to link compensation actually paid to our NEOs for the year-end December 31, 2025. For further information regarding these performance metrics and their function in our executive compensation program, please see “Compensation Discussion and Analysis” beginning on page 48.
Performance Measures
Financial Performance Measure:
Revenue
Adjusted EBITDA*
Non-financial Performance Measures:
Reimbursement Rates for our Tests
Pipeline Milestones
*As an example for how we have calculated adjusted EBITDA in the past, refer to our reconciliation of adjusted EBITDA for the three and twelve months ended December 31, 2025 to the most directly comparable GAAP financial measure presented within the tables at the end of our earnings release furnished as Exhibit 99.1 to our Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission on February 26, 2026. 		       
Total Shareholder Return Amount $ 57.93 39.69 32.14 35.06 63.84
Peer Group Total Shareholder Return Amount 124.75 93.49 94.03 89.90 100.02
Net Income (Loss) $ (24,158,000) $ 18,245,000 $ (57,466,000) $ (67,138,000) $ (31,292,000)
Company Selected Measure Amount 344,229,000 332,069,000 219,788,000 137,039,000 94,085,000
PEO Name Mr. Maetzold        
Additional 402(v) Disclosure The dollar amounts presented are from our consolidated financial statements appearing in our Annual Report on Form 10-K for each of the reported fiscal years.This is our Company-Selected Measure provided in accordance with Item 402(v)(2)(vi) of Regulation S-K. The dollar amounts presented are from our consolidated financial statements appearing in our Annual Report on Form 10-K for each of the reported fiscal years.        
Measure:: 1          
Pay vs Performance Disclosure          
Name Revenue        
Measure:: 2          
Pay vs Performance Disclosure          
Name Adjusted EBITDA*        
Measure:: 3          
Pay vs Performance Disclosure          
Name Reimbursement Rates for our Tests        
Measure:: 4          
Pay vs Performance Disclosure          
Name Pipeline Milestones        
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 8,709,554        
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 2,315,765        
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 331,938        
PEO | Aggregate Grant Date Fair Value of Stock Award Amounts Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (4,977,208)        
PEO | Aggregate Grant Date Fair Value of Option Award Amounts Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 0        
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 2,481,198        
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 786,038        
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 153,659        
Non-PEO NEO | Aggregate Grant Date Fair Value of Stock Award Amounts Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (1,417,918)        
Non-PEO NEO | Aggregate Grant Date Fair Value of Option Award Amounts Reported in Summary Compensation Table [Member]          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 0