Note 3 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	Mar. 31, 2022	Jan. 01, 2022
Cumulative Effect of Applying Accounting Standards Update on Accumulated Deficit		$ 9,739,000
Reduction of Additional Paid In Capital Due to Recombination		10,681,000
Reduction of Debt Discounts of Convertible Promissory Notes		$ 942,000
CAR-TXpress [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	20.00%
Noncontrolling Interest, Ownership Percentage by Parent	80.00%

The amount of cumulative effect of applying accounting standards update (ASU) on accumulated deficit.

No definition available.

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- Definition

The amount of the reduction to additional paid-in-capital during the reporting period due to the adoption of the new accounting standard.

+ References

No definition available.

+ Details

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- Definition

The amount of reduction of debt discounts of convertible promissory notes during the reporting period due to the adoption of the new accounting standard.

+ References

No definition available.

+ Details

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Details

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