Note 6 - Investment and Equity Securities - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands		Mar. 31, 2025	Dec. 31, 2024
Due in one year or less, amortized costs		$ 590
Due in one year or less, fair value		591
Due after one year through five years, amortized costs		6,816
Due after one year through five years, fair value		6,664
Due after five years through ten years, amortized costs		57,517
Due after five years through ten years, fair value		54,754
Due after ten years, amortized costs		125,964
Due after ten years, fair value		103,005
Amortized costs	[1]	190,887	$ 191,211
Fair Value		$ 165,014	$ 165,802

[1] Accrued interest of $1.5 million is excluded from amortized cost and presented in "accrued interest receivable and other assets" on the Consolidated Balance Sheet.