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Note 10 - Commitments and Contingencies (Details Textual) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)
Assets	$ 3,039,964	$ 2,706,445	$ 2,596,901
Customer Concentration Risk [Member] | Private Label Credit Receivable [Member]
Number of Major Customers	5
Customer Concentration Risk [Member] | Private Label Credit Receivable [Member] | Five Largest Retail Partners [Member]
Concentration Risk, Percentage	75.00%
Asset Pledged as Collateral [Member] | Contractual Obligations [Member]
Assets	$ 19,600
Unfunded Individual Credit Commitment [Member]
Other Commitment	3,400,000
Unfunded Outstanding Floor-Plan Financing Commitment [Member]
Other Commitment	9,800
Credit Protection Program [Member]
Loss Contingency, Estimate of Possible Loss	$ 86,500

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