Gross proceeds, aggregate percentage.

No definition available.

Name:	VTSI_GrossProceedsAggregatePercentage
Namespace Prefix:	VTSI_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Reimbursement legal fees and expenses.

+ References

No definition available.

+ Details

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Namespace Prefix:	VTSI_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Face amount or stated value per share of common stock.

+ 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(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from entity's first offering of stock to the public.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

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

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=VTSI_OfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Subsequent Events (Details Narrative) - USD ($)			3 Months Ended
Subsequent Events (Details Narrative) - USD ($)	Apr. 05, 2021	Mar. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Common stock, par value		$ 0.0001	$ 0.0001	$ 0.0001
Securities Purchase Agreement [Member] \| Offering [Member] \| Subsequent Event [Member]
Gross proceeds from public offering	$ 18,000,000
Securities Purchase Agreement [Member] \| Certain Institutional Investors [Member]
Sale of stock, shares		300,000
Common stock, par value		$ 0.001	0.001
Sale of stock, price per share		$ 6.00	$ 6.00
Placement Agency Agreement [Member] \| Roth Capital Partners, LLC [Member]
Gross proceeds, aggregate percentage			6.50%
Placement Agency Agreement [Member] \| Roth Capital Partners, LLC [Member] \| Maximum [Member]
Reimbursement legal fees and expenses			$ 35,000