v2.4.1.9

Debt - Summary of Aggregate Annual Payments Due (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Debt Instrument [Line Items] |  |
Less: current portion | $ (5,961)us-gaap_LongTermDebtCurrent | $ (4,461)us-gaap_LongTermDebtCurrent
Long-term portion | 5,451us-gaap_LongTermDebtNoncurrent | 10,914us-gaap_LongTermDebtNoncurrent
2012 Loan [Member] |  |
Debt Instrument [Line Items] |  |
Year ending December 31, 2015 | 6,802cdna_LongTermDebtMaturitiesRepaymentsInNextTwelveMonths / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Year ending December 31, 2016 | 5,809cdna_LongTermDebtMaturitiesRepaymentsInYearTwo / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Total remaining debt payments | 12,611cdna_LongTermDebtMaturitiesRepayments / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Less: amounts representing interest | (2,204)cdna_LongTermDebtMaturitiesRepaymentsOfInterest / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Equals: debt principal balance as of December 31, 2014 | 10,407cdna_LongTermDebtMaturitiesRepaymentsOfPrincipal / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Plus: unamortized premium, net | 899us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Equals: debt balance as of December 31, 2014 including accrued interest, net of unaccreted discount | 11,306us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Less: current portion | (5,961)us-gaap_LongTermDebtCurrent / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Long-term portion | 5,345us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |
Equals: debt balance as of December 31, 2014 including accrued interest, net of unaccreted discount | $ 11,306us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = cdna_TwoThousandTwelveTermLoanMember |

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- Definition Long term debt maturities repayments in next twelve months. + References No definition available. + Details
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- Definition Long term debt maturities repayments in year two. + References No definition available. + Details
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- Definition Long Term Debt Maturities Repayments Of Interest + References No definition available. + Details
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- Definition Long Term Debt Maturities Repayments Of Principal + References No definition available. + Details
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- Definition The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28567-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -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 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.22) -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 22 -Article 5 + Details
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