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Note 8 - FAIR VALUE - Changes In Fair Values of Trading Securities (Details) - Trading securities - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
FAIR VALUE
Balance at the beginning of the period	$ 83,529	$ 22,369
Paydowns	(40)
Premium amortization	(235)	(130)
Fair value gain (loss)	$ (809)	$ 19
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Fair Value Gain Loss On Derivatives An Trading Securities	Fair Value Gain Loss On Derivatives An Trading Securities
Balance at the end of the period	$ 82,445	$ 22,258

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