Note 18 - Fair Value Disclosure Measurements - Fair Value Reconciliation of Level 3 Assets (Details) - Subordinated Debt Obligations [Member] $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Balance as of January 1, 2021	$ 7,250
Purchases	4,000
Sales	0
Settlements	0
Transfers into Level 3 (1)	1,700
Transfers out of Level 3 (2)	(750)
Balance as of December 31, 2021	$ 12,200

Amount of purchases of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (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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Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (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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Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into level 3 of the fair value hierarchy.

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Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (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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