v3.26.1
Note 6 - Fair Value - Reconciliation of Level 3 Assets (Details)
3 Months Ended
Mar. 31, 2026
USD ($)
Unrealized appreciation (depreciation) $ 24,851
Fair Value, Inputs, Level 3 [Member]  
Fair value, balance 169,165
Purchases 0
Sales 0
Realized gains (losses) 0
Unrealized appreciation (depreciation) (24,851) [1]
Transfers 0
Fair value, balance 144,314
Common Stock [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair value, balance 167,642
Purchases 0
Sales 0
Realized gains (losses) 0
Unrealized appreciation (depreciation) (24,082) [1]
Transfers 0
Fair value, balance 143,560
Common Stock [Member] | Advanced Materials Sector [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair value, balance 167,642
Purchases 0
Sales 0
Realized gains (losses) 0
Unrealized appreciation (depreciation) (24,082) [1]
Transfers 0
Fair value, balance 143,560
Preferred Stock [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair value, balance 0
Purchases 0
Sales 0
Realized gains (losses) 0
Unrealized appreciation (depreciation) 0 [1]
Transfers 0
Fair value, balance 0
Debt [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair value, balance 1,523
Purchases 0
Sales 0
Realized gains (losses) 0
Unrealized appreciation (depreciation) (769) [1]
Transfers 0
Fair value, balance 754
Debt [Member] | Medical Devices Sector [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair value, balance 1,523
Purchases 0
Sales 0
Realized gains (losses) 0
Unrealized appreciation (depreciation) (769) [1]
Transfers 0
Fair value, balance $ 754
[1] The net change in unrealized appreciation (depreciation) from Level 3 instruments held as of December 31, 2025 was $(116,619).