Area of a real estate property.

No definition available.

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_SecurityDeposit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents information about allowance amount for certain tenant improvements related to engineering, design and construction of Sublease Premises.

+ References

No definition available.

+ Details

Name:	vive_OperatingLeasesAllowanceForCertainImprovements
Namespace Prefix:	vive_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the monthly base rent per rentable square foot of the Sublease Premises during the first year.

+ References

No definition available.

+ Details

Name:	vive_OperatingLeasesMonthlyRentPerRentableSquareFootDuringFirstYear
Namespace Prefix:	vive_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the monthly base rent per rentable square foot of the Sublease Premises during the second year.

+ References

No definition available.

+ Details

Name:	vive_OperatingLeasesMonthlyRentPerRentableSquareFootDuringSecondYear
Namespace Prefix:	vive_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the monthly base rent per rentable square foot of the Sublease Premises during the third year.

+ References

No definition available.

+ Details

Name:	vive_OperatingLeasesMonthlyRentPerRentableSquareFootDuringThirdYear
Namespace Prefix:	vive_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=vive_SubleaseAgreementForRelocationOfHeadquartersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 7 - Commitments and Contingencies (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Feb. 01, 2017 USD ($) ft² $ / item
Operating Leases, Rent Expense, Total \| $	$ 90,000	$ 94,000	$ 228,000	$ 167,000
Sublease Agreement for Relocation of Headquarters [Member]
Area of Real Estate Property \| ft²					12,400
Operating Leases, Monthly Rent Per Rentable Square Foot During First Year \| $ / item					20.5
Operating Leases, Monthly Rent Per Rentable Square Foot During Second Year \| $ / item					21.12
Operating Leases, Monthly Rent Per Rentable Square Foot During Third Year \| $ / item					21.75
Security Deposit \| $					$ 22,000
Operating Leases, Allowance for Certain Improvements \| $					$ 88,000