Note 6 - Stockholders' Equity (Details Textual)	12 Months Ended
	Dec. 31, 2025 $ / shares shares	Dec. 31, 2024 $ / shares shares	Dec. 31, 2023 $ / shares
Capital Units, Authorized	245,000,000
Common Stock, Shares Authorized	200,000,000	200,000,000
Preferred Stock, Shares Authorized	20,000,000
Common Stock, Voting Rights, Votes Per Share	1
Common Stock, Dividends, Per Share, Declared | $ / shares	$ 0.32	$ 0.32	$ 0.32
Common Stock, Capital Shares Reserved for Future Issuance	17,000,000
Class A Common Stock (No Par Value) [Member]
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Voting Rights, Votes Per Share	10
Common Stock, Capital Shares Reserved for Future Issuance	3,400,000