Note 3 - Summary of Significant Accounting Policies (Details Textual) |
Jun. 30, 2023
USD ($)
|
Dec. 31, 2022
USD ($)
|
Jun. 30, 2022 |
|---|---|---|---|
| Cash, FDIC Insured Amount | $ 250,000 | ||
| Cash, Uninsured Amount | 700,000 | ||
| Contract with Customer, Liability | $ 59,000 | $ 36,000 | |
| United Kingdom, Pounds | Closing Rate [Member] | |||
| Foreign Currency Exchange Rate, Translation | 1.26 | 1.21 | 1.22 |
| United Kingdom, Pounds | Quarterly Average Rate [Member] | |||
| Foreign Currency Exchange Rate, Translation | 1.25 | 1.24 | 1.26 |
| Maximum [Member] | |||
| Cash, FDIC Insured Amount | $ 250,000 |
| X | ||||||||||
- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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