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Note 10 - FAIR VALUE - Changes In Fair Values of Trading Securities (Details) - Trading securities - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
FAIR VALUE
Balance at the beginning of the period	$ 82,900	$ 22,362	$ 83,529	$ 22,369
Trading securities purchased		36,670		36,670
Paydowns	(42)		(123)
Premium amortization	(240)	(147)	(711)	(407)
Fair value gain (loss)	$ 607	$ (200)	$ 530	$ 53
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	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	$ 83,225	$ 58,685	$ 83,225	$ 58,685

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