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Note 21 - Fair Value of Financial Instruments - Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Thousands	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Limited liability investments, at fair value	$ 0	$ 13,863
Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, at fair value		19,000
Limited Liability Investments [Member]
Limited liability investments, at fair value	3,688	17,059
Fair Value, Inputs, Level 3 [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, at fair value		19,034
Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Limited Liability Investments [Member]
Limited liability investments, at fair value	$ 3,688	3,196
Valuation Multiples [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Cap Rate [Member] | Minimum [Member]
Limited liability investments, measurement input	0.010
Valuation Multiples [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Cap Rate [Member] | Maximum [Member]
Limited liability investments, measurement input	0.090
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Contingent consideration, at fair value	$ 3,283	$ 3,218
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Discount Rate [Member]
Contingent consideration, measurement input	0.0825	0.0825
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Risk Free Interest Rate [Member]
Contingent consideration, measurement input	0.0430	0.0444
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Price Volatility [Member]
Contingent consideration, measurement input		0.130
Binomial Lattice Option Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Credit Spread [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, measurement input		0.0895
Binomial Lattice Option Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Interest Rate Volatility [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, measurement input		0.023
Binomial Lattice Option Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Debt Coupon Interest Rate [Member] | Minimum [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, measurement input		0.0872
Binomial Lattice Option Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Debt Coupon Interest Rate [Member] | Maximum [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, measurement input	0.1300	0.0887
Binomial Lattice Option Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Expected Term [Member] | Minimum [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, measurement input		10.4
Binomial Lattice Option Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Expected Term [Member] | Maximum [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options, measurement input		10.59

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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