Note 8 - Borrowings - Leverage Ratio (Details)	3 Months Ended
Note 8 - Borrowings - Leverage Ratio (Details)	Mar. 31, 2026
Leverage Ratio1 [Member]
Commitment Fee	0.15%
Leverage Ratio 2 [Member]
Commitment Fee	0.15%
Leverage Ratio 3 [Member]
Commitment Fee	0.20%
Leverage Ratio 4 [Member]
Commitment Fee	0.20%
Leverage Ratio 5 [Member]
Commitment Fee	0.25%
Secured Overnight Financing Rate (SOFR) [Member] \| Leverage Ratio1 [Member]
Spread on variable rate	1.00%
Secured Overnight Financing Rate (SOFR) [Member] \| Leverage Ratio 2 [Member]
Spread on variable rate	1.25%
Secured Overnight Financing Rate (SOFR) [Member] \| Leverage Ratio 3 [Member]
Spread on variable rate	1.50%
Secured Overnight Financing Rate (SOFR) [Member] \| Leverage Ratio 4 [Member]
Spread on variable rate	1.75%
Secured Overnight Financing Rate (SOFR) [Member] \| Leverage Ratio 5 [Member]
Spread on variable rate	2.00%
Base Rate [Member] \| Leverage Ratio1 [Member]
Spread on variable rate	0.00%
Base Rate [Member] \| Leverage Ratio 2 [Member]
Spread on variable rate	0.25%
Base Rate [Member] \| Leverage Ratio 3 [Member]
Spread on variable rate	0.50%
Base Rate [Member] \| Leverage Ratio 4 [Member]
Spread on variable rate	0.75%
Base Rate [Member] \| Leverage Ratio 5 [Member]
Spread on variable rate	1.00%