XML 71 R57.htm IDEA: XBRL DOCUMENT
v3.25.2

Stockholders' Equity - Common Stock Reserved For Issuance (Details) - shares | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Share Repurchase Program [Line Items] |  |
Shares reserved for future issuance of common stock (in shares) | 9,086,622 | 13,370,470
Remaining shares reserved for issuance under the 2016 Inducement Equity Incentive Plan, 2019 Inducement Equity Incentive Plan, and 2024 Equity Incentive Plan |  |
Share Repurchase Program [Line Items] |  |
Shares reserved for future issuance of common stock (in shares) | 1,633,869 | 4,559,101
Shares reserved under the Employee Stock Purchase Plan |  |
Share Repurchase Program [Line Items] |  |
Shares reserved for future issuance of common stock (in shares) | 407,806 | 558,787
Common stock options issued and outstanding |  |
Share Repurchase Program [Line Items] |  |
Shares reserved for future issuance of common stock (in shares) | 2,755,712 | 3,409,912
RSUs and PSUs issued and outstanding |  |
Share Repurchase Program [Line Items] |  |
Shares reserved for future issuance of common stock (in shares) | 4,289,235 | 4,842,670

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
Name: | srt_ShareRepurchaseProgramLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PlanNameAxis=cdna_EquityIncentivePlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=cdna_EmployeeStockPurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=cdna_RestrictedStockUnitsRSUsAndPerformanceStockUnitsPSUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |