Note 2 - Cash (Details Textual) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Federal Reserve Bank, Reserve Requirement	$ 0	$ 0
Cash, FDIC Insured Amount	$ 250,000

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.

Name:	us-gaap_CashFDICInsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant