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Note 11 - Fair Value Measurement - Changes in Level 3 Assets (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2026	Mar. 31, 2025
Balance		$ 3,014
Balance		2,999
Fair Value, Recurring [Member]
Balance		3,014
Balance		2,999
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Balance		3,014	$ 3,281
Servicing rights that result from transfers and sale of financial assets		3	11
Changes in fair value due to changes in model inputs or assumptions (1)	[1]	(18)	9
Balance		2,999	3,301
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Balance		6,599	31,881
Principal payments and maturities		0	(13,424)
Unrealized (Losses) Gains		(16)	86
Balance		$ 6,583	$ 18,543
[1] Represents changes due to collection/realization of expected cash flows and curtailments.

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- Definition

Amount of change in fair value to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

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Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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- Definition

Amount of additions from purchases, assumption or transfer to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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