Note 6 - Fair Values of Assets and Liabilities - Measurement Inputs (Details)	Jun. 30, 2026	Dec. 31, 2025
Weighted Average [Member]
Contingent consideration, measurement input		0.15
Bank Partner Fees [Member] \| Measurement Input, Customer Payment Rate [Member] \| Minimum [Member]
Bank partner fees, measurement input		0.057
Bank Partner Fees [Member] \| Measurement Input, Customer Payment Rate [Member] \| Maximum [Member]
Bank partner fees, measurement input		0.101
Bank Partner Fees [Member] \| Measurement Input, Customer Payment Rate [Member] \| Weighted Average [Member]
Bank partner fees, measurement input	0.083	0.084
Bank Partner Fees [Member] \| Measurement Input, Discount Rate [Member] \| Minimum [Member]
Bank partner fees, measurement input	0.085	0.085
Bank Partner Fees [Member] \| Measurement Input, Discount Rate [Member] \| Maximum [Member]
Bank partner fees, measurement input	0.125	0.125
Bank Partner Fees [Member] \| Measurement Input, Discount Rate [Member] \| Weighted Average [Member]
Bank partner fees, measurement input	0.098	0.097
Contingent Consideration [Member] \| Measurement Input, Charge-off Rate [Member] \| Minimum [Member]
Contingent consideration, measurement input	0.197	0.162
Contingent Consideration [Member] \| Measurement Input, Charge-off Rate [Member] \| Maximum [Member]
Contingent consideration, measurement input	0.27	0.24
Contingent Consideration [Member] \| Measurement Input, Charge-off Rate [Member] \| Weighted Average [Member]
Contingent consideration, measurement input	0.219	0.198
Contingent Consideration [Member] \| Measurement Input, Charge-off Volatility [Member]
Contingent consideration, measurement input	0.15	0.15
Contingent Consideration [Member] \| Measurement Input, Charge-off Volatility [Member] \| Weighted Average [Member]
Contingent consideration, measurement input	0.15