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Note 4 - Business Combination - Estimated Useful Life of Acquisition-related Intangibles (Details) - NanoString [Member] | Dec. 03, 2019
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Prosigna Product Technology [Member] |
Estimated useful life (Year) | 15 years
Prosigna Customer Relationships [Member] |
Estimated useful life (Year) | 5 years
nCounter FLEX Dx License [Member] |
Estimated useful life (Year) | 15 years
LymphMark Product Technology [Member] |
Estimated useful life (Year) | 7 years

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=vcyt_NanostringMember
Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vcyt_ProsignaProductTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vcyt_ProsignaCustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=vcyt_LymphmarkProductTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |