Note 2 - Summary of Significant Accounting Policies - Summary of Cash Balances (Details) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Cash and Cash Equivalent	$ 2,188,000	$ 3,883,000
Parent Company [Member]
Cash and Cash Equivalent	1,725,000	2,826,000
Noncontrolling Interest [Member]
Cash and Cash Equivalent	$ 463,000	$ 1,057,000

Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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