Represents the amount of accrual for suspended salary benefits and bonuses, to be paid upon the closing of a merger.

No definition available.

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- Definition

Represents the monthly lease payment due for the reporting period.

+ References

No definition available.

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Represents the yearly rate of escalation in contractual monthly lease payments under an operating lease.

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No definition available.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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- Definition

Represents the period over which the deferred balance is prorated under a rent deferral agreement related to the COVID-19 pandemic.

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No definition available.

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Represents the deferred balance, included in accounts payable, under a rent deferral agreement related to the COVID-19 pandemic.

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No definition available.

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- Definition

Area of a real estate property.

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No definition available.

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Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- 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.

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No definition available.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Note 11 - Commitments and Contingencies (Details Textual)			12 Months Ended
	Apr. 29, 2020	Aug. 01, 2019 USD ($)	Dec. 31, 2021 USD ($) ft²	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Weighted-average remaining lease term in years			7 months 6 days	1 year 7 months 6 days
Weighted-average discount rate			15.00%	15.00%
Lease, Cost			$ 197,000	$ 194,000
Less: imputed interest			5,000
Total remaining future minimum lease payments			$ 117,000
Rent deferral agreement related to the COVID-19 pandemic, proration of deferred balance, period (Month)	6 months
Rent deferral agreement related to the COVID-19 pandemic, deferred balance				87,000
Accrual for suspended salary benefits and bonuses, to be paid upon closing of merger				$ 1,100,000
Office Space Lease for Corporate Headquarters in Carlsbad, CA [Member]
Loss Contingencies [Line Items]
Area of real estate property (Square Foot) \| ft²			4,911
July 2019 Headquarter Lease [Member]
Loss Contingencies [Line Items]
Lessee, operating lease, term of contract (Year)		3 years
Lessee, operating lease, renewal term (Month)		36 months
Lease monthly payment		$ 16,000
Operating lease, contractual monthly lease payments, yearly escalation rate		3.00%