Note Payable (Detail Narrative) - USD ($)	May 08, 2020	Mar. 31, 2021	Dec. 31, 2020
Debt instrument principal amount		$ 366,919	$ 257,471
Paycheck Protection Program Loan [Member] \| Convertible Promissory Note [Member]
Debt instrument principal amount	$ 1,320,714
Debt interest rate	1.00%
Debt instrument periodic payment	$ 55,604
Debt instrument maturity date	May 08, 2022
Debt instrument interest amount	$ 18,720
Debt instrument term	2 years
Repayment of notes payable	$ 1,339,434
Repayment of loan amount	$ 1,320,714

Debt instrument interest amount.

No definition available.

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

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

+ References

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Balance Type:	na
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- Definition

Amount of the required periodic payments including both interest and principal payments.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for a borrowing supported by a written promise to pay an obligation.

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- Definition

The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

+ References

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