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Note 23 - Fair Value of Financial Instruments - Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Limited liability investments, at fair value	$ 0	$ 13,863
Limited Liability Investments [Member]
Limited liability investments, at fair value	3,496	17,059
Fair Value, Inputs, Level 3 [Member] | Trust Preferred Debt Repurchase Options Contracts [Member]
Derivative - trust preferred debt repurchase options		19,034
Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Limited Liability Investments [Member]
Limited liability investments, at fair value	$ 3,496	$ 3,196
Valuation Multiples [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Cap Rate [Member] | Minimum [Member]
Limited liability investments, measurement input	1	1
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Contingent consideration, at fair value	$ 3,105	$ 3,218
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Discount Rate [Member]
Contingent consideration, measurement input		8.25
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Risk Free Interest Rate [Member]
Contingent consideration, measurement input		4.44
Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Price Volatility [Member]
Contingent consideration, measurement input		13
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		8.95
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		2.3
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		7.71
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	9	8.72
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		10.84
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		10.4

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