Debt instrument down payment.

No definition available.

Name:	VISL_DebtInstrumentDownPayment
Namespace Prefix:	VISL_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

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+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
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

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+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments applied to interest.

+ References

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+ Details

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

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

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+ Details

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

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShortTermDebtLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=VISL_DAndOInsurancePolicyRenewedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=VISL_NotesPayableOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=VISL_NotesPayableTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SCHEDULE OF NOTES PAYABLE (Details) (Parenthethical) - USD ($)			3 Months Ended		6 Months Ended
	Apr. 05, 2023	Apr. 05, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Feb. 28, 2023	Feb. 01, 2023	Jan. 23, 2023
Short-Term Debt [Line Items]
Debt instrument, face amount							$ 950,000	$ 4,999,750	$ 5,065,789
Debt instrument, interest rate, stated percentage							5.07%	4.75%	5.1948%
D & O Insurance Policy Renewed [Member] \| Notes Payable One [Member]
Short-Term Debt [Line Items]
Debt instrument, face amount		$ 1,037,000
Debt instrument down payment		$ 194,000
Debt instrument, interest rate, stated percentage		2.09%
Debt instrument, periodic payment, interest		$ 84,000
Interest expense			$ 0	$ 0	$ 150	$ 2,000
D & O Insurance Policy Renewed [Member] \| Notes Payable Two [Member]
Short-Term Debt [Line Items]
Debt instrument, face amount	$ 811,000
Debt instrument down payment	$ 288,000
Debt instrument, interest rate, stated percentage	6.14%
Debt instrument, periodic payment, interest	$ 67,000
Interest expense			$ 5,000	$ 0	$ 5,000	$ 0
Notes payable	$ 523,000