Note 7 - Financial Instruments - Investments - Trading (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Investments-trading	$ 173,064	$ 140,576
Residential Mortgage-Backed Securities [Member]
Debt securities	3	3
Small Business Administration Loans [Member]
Debt securities	34,710	43,090
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Debt securities	59,248	42,471
US Government Agencies Debt Securities [Member]
Debt securities	20,116	17,675
Corporate Bonds and Redeemable Preferred Stock [Member]
Investments-trading	35,768	18,449
Derivative [Member]
Investments-trading	4,802	4,651
Equity Securities [Member]
Investments-trading	17,468	10,424
Municipal Bonds [Member]
Investments-trading	$ 949	$ 3,813

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Balance Type:	debit
Period Type:	instant