XML 38 R25.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Organization and Description of Business - Credit Risk (Details) - item | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Concentrations of Credit Risk and Other Risks and Uncertainties |  |  |  |  |
Number of major financial institutions with which the company's cash and cash equivalents are deposited | 1 |  | 1 |  |
Revenue | Revenue concentration risk |  |  |  |  |
Concentrations of Credit Risk and Other Risks and Uncertainties |  |  |  |  |
Concentrations of credit risk (as a percent) | 40.00% | 34.00% | 40.00% | 39.00% |
Revenue | Revenue concentration risk | Medicare |  |  |  |  |
Concentrations of Credit Risk and Other Risks and Uncertainties |  |  |  |  |
Concentrations of credit risk (as a percent) | 26.00% | 23.00% | 26.00% | 27.00% |
Revenue | Revenue concentration risk | UnitedHealthcare |  |  |  |  |
Concentrations of Credit Risk and Other Risks and Uncertainties |  |  |  |  |
Concentrations of credit risk (as a percent) | 14.00% | 11.00% | 14.00% | 12.00% |
Accounts receivable | Gross receivables concentration risk | Medicare |  |  |  |  |
Concentrations of Credit Risk and Other Risks and Uncertainties |  |  |  |  |
Concentrations of credit risk (as a percent) |  |  | 17.00% |  | 18.00%

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | vcyt_ConcentrationRiskAbstract
Namespace Prefix: | vcyt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of major financial institutions, with which cash and cash equivalents are deposited by the entity. + References No definition available. + Details
Name: | vcyt_NumberOfMajorFinancialInstitutionsWithWhichCashAndCashEquivalentsDeposited
Namespace Prefix: | vcyt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=vcyt_SalesRevenueGrossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HealthCareOrganizationRevenueSourcesAxis=vcyt_MedicareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HealthCareOrganizationRevenueSourcesAxis=vcyt_UnitedHealthcareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |