v2.4.1.9

Collaboration and Licensing Agreements - Additional Information (Detail) | 1 Months Ended | 12 Months Ended |  | 0 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 31, 2013 USD ($) | Jun. 30, 2013 USD ($) | Jun. 30, 2013 EUR (€) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2014 Up-front Payment Arrangement [Member] USD ($) | Sep. 18, 2014 Laboratory Corp of America Holdings [Member] USD ($) | Apr. 30, 2012 Laboratory Corp of America Holdings [Member] USD ($) | Dec. 31, 2014 Laboratory Corp of America Holdings [Member] USD ($) | Dec. 31, 2014 Laboratory Corp of America Holdings [Member] USD ($) | Dec. 31, 2013 Laboratory Corp of America Holdings [Member] USD ($) | Dec. 31, 2012 Laboratory Corp of America Holdings [Member] USD ($) | Jun. 30, 2013 Diaxonhit (DHT) [Member] USD ($) | Jun. 30, 2013 Diaxonhit (DHT) [Member] EUR (€)
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration of arrangement of license |  |  |  |  |  |  |  |  | $ 1,000,000cdna_CollaborativeAgreementContractValue / dei_LegalEntityAxis = cdna_LaboratoryCorpOfAmericaHoldingsMember |  |  |  |  |  |
Description of agreement expire term |  |  |  | The agreement will expire at the later of the last-to-expire patent in the EEA or ten years from the first commercial sale of the test in the EEA, which is expected to occur in late 2014 or early 2015. |  |  |  |  |  |  | The license term in the 2012 Agreement was the later of 10 years from the date of the agreement or the expiration of the last-to-expire patents and patent applications included in the CareDx technology licensed to LabCorp, unless the license were terminated by mutual agreement. |  |  |  |
Upfront license fee payment |  |  |  |  |  | 1,000,000us-gaap_ProceedsFromLicenseFeesReceived |  |  |  |  |  |  |  |  |
Non-refundable and non creditable payment received |  |  |  |  |  | 250,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned |  |  |  |  |  |  |  |  |
Termination of collaboration agreement date |  |  |  |  |  |  |  |  |  |  | Sep. 18, 2014 |  |  |  |
Research and development expenses |  |  |  | 3,846,000us-gaap_ResearchAndDevelopmentExpense | 3,176,000us-gaap_ResearchAndDevelopmentExpense | 4,752,000us-gaap_ResearchAndDevelopmentExpense |  | 500,000us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = cdna_LaboratoryCorpOfAmericaHoldingsMember |  |  | 32,000us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = cdna_LaboratoryCorpOfAmericaHoldingsMember | 282,000us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = cdna_LaboratoryCorpOfAmericaHoldingsMember | 499,000us-gaap_ResearchAndDevelopmentExpense / dei_LegalEntityAxis = cdna_LaboratoryCorpOfAmericaHoldingsMember |  |
Previously unrecognized license fee |  |  |  | 505,000us-gaap_DeferredRevenueCurrent | 80,000us-gaap_DeferredRevenueCurrent |  | 611,000us-gaap_DeferredRevenueCurrent / us-gaap_DeferredRevenueArrangementTypeAxis = us-gaap_UpFrontPaymentArrangementMember |  |  |  |  |  |  |  |
Termination agreement fee |  |  |  | 500,000cdna_TerminationFee | 0cdna_TerminationFee | 0cdna_TerminationFee |  |  |  | 500,000cdna_TerminationFee / dei_LegalEntityAxis = cdna_LaboratoryCorpOfAmericaHoldingsMember |  |  |  |  |
Revenue recognized under collaboration and licensing agreements |  |  |  | 1,100,000us-gaap_LicensesRevenue | 328,000us-gaap_LicensesRevenue | 437,000us-gaap_LicensesRevenue |  |  |  |  |  |  |  |  |
Amortization of upfront license fee |  |  |  | 626,000us-gaap_AmortizationOfDeferredLeasingFees | 187,000us-gaap_AmortizationOfDeferredLeasingFees | 187,000us-gaap_AmortizationOfDeferredLeasingFees |  |  |  |  |  |  |  |  |
Reimbursement of research and development expenses |  |  |  | 16,000us-gaap_ReimbursementRevenue | 141,000us-gaap_ReimbursementRevenue | 250,000us-gaap_ReimbursementRevenue |  |  |  |  |  |  |  |  |
Upfront cash payment |  | 503,000cdna_UpfrontPaymentInCash | 387,500cdna_UpfrontPaymentInCash |  |  |  |  |  |  |  |  |  |  |  |
Refundable upfront payments |  | 344,000cdna_PotentialRefundablePortionOfUpfrontPayment | 250,000cdna_PotentialRefundablePortionOfUpfrontPayment |  |  |  |  |  |  |  |  |  |  |  |
Common stock value |  |  |  | 12,000us-gaap_CommonStockValue | 1,000us-gaap_CommonStockValue |  |  |  |  |  |  |  |  | 503,000us-gaap_CommonStockValue / dei_LegalEntityAxis = cdna_DiaxonhitMember | 387,500us-gaap_CommonStockValue / dei_LegalEntityAxis = cdna_DiaxonhitMember
Shares sold for consideration | 467,000us-gaap_SaleOfStockConsiderationReceivedOnTransaction |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue recognized from the arrangement |  |  |  | 36,000us-gaap_RecognitionOfDeferredRevenue |  |  |  |  |  |  |  |  |  |  |
Royalty revenues |  |  |  | 221,000us-gaap_RoyaltyRevenue | 94,000us-gaap_RoyaltyRevenue | 34,000us-gaap_RoyaltyRevenue |  |  |  |  |  |  |  |  |
Royalty revenues receivable balance |  |  |  | $ 54,000cdna_RoyaltyRevenueReceivable | $ 37,000cdna_RoyaltyRevenueReceivable |  |  |  |  |  |  |  |  |  |

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- Definition This element represents the amortization of deferred leasing fees incurred by the lessor and amortized over the term of the lease. Such fees represent (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40246-112709 + Details
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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- Definition Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A -Subsection 1 + Details
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- Definition Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=21915142&loc=d3e60722-111653 + Details
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- Definition The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23221-108380 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23199-108380 + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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