Consolidated Condensed Schedule of Investments Derivative Liabilities at Fair Value (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Summary of Investment Holdings [Line Items]
Derivative assets at cost	$ 41,446	$ 44,049
Derivative liabilities at cost	628	(22)
Series I
Summary of Investment Holdings [Line Items]
Derivative assets at cost	6,483	8,771
Derivative liabilities at cost	98	(5)
Series II
Summary of Investment Holdings [Line Items]
Derivative assets at cost	34,963	35,278
Derivative liabilities at cost	530	(17)
Open Futures Contract, Identifier [Axis]: Contract name American Airlines Group Inc. (AMR Corp), Notional amount of $107; $443; $550, respectively Type Credit Default Swaps Maturity 12/20/2029
Summary of Investment Holdings [Line Items]
Notional amount		550
Open Futures Contract, Identifier [Axis]: Contract name American Airlines Group Inc. (AMR Corp), Notional amount of $107; $443; $550, respectively Type Credit Default Swaps Maturity 12/20/2029 Series I
Summary of Investment Holdings [Line Items]
Notional amount		107
Open Futures Contract, Identifier [Axis]: Contract name American Airlines Group Inc. (AMR Corp), Notional amount of $107; $443; $550, respectively Type Credit Default Swaps Maturity 12/20/2029 Series II
Summary of Investment Holdings [Line Items]
Notional amount		443
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $8,528; $35,472; $44,000, respectively Type Credit Default Swaps Maturity 08/19/2029 - 10/10/2030
Summary of Investment Holdings [Line Items]
Notional amount		44,000
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $8,528; $35,472; $44,000, respectively Type Credit Default Swaps Maturity 08/19/2029 - 10/10/2030 Series I
Summary of Investment Holdings [Line Items]
Notional amount		8,528
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $8,528; $35,472; $44,000, respectively Type Credit Default Swaps Maturity 08/19/2029 - 10/10/2030 Series II
Summary of Investment Holdings [Line Items]
Notional amount		35,472
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $8,708; $45,565; $54,273, respectively Type Credit Default Swaps Maturity 08/19/2029 - 10/10/2030
Summary of Investment Holdings [Line Items]
Notional amount	54,273
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $8,708; $45,565; $54,273, respectively Type Credit Default Swaps Maturity 08/19/2029 - 10/10/2030 Series I
Summary of Investment Holdings [Line Items]
Notional amount	8,708
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $8,708; $45,565; $54,273, respectively Type Credit Default Swaps Maturity 08/19/2029 - 10/10/2030 Series II
Summary of Investment Holdings [Line Items]
Notional amount	45,565
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $86; ($2,974); ($2,888), respectively Type Credit Default Swaps Maturity 12/20/2029 - 06/20/2030
Summary of Investment Holdings [Line Items]
Derivative liability, notional amount	(2,888)
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $86; ($2,974); ($2,888), respectively Type Credit Default Swaps Maturity 12/20/2029 - 06/20/2030 Series I
Summary of Investment Holdings [Line Items]
Notional amount	86
Open Futures Contract, Identifier [Axis]: Contract name CDS (Multiple), Notional amount of $86; ($2,974); ($2,888), respectively Type Credit Default Swaps Maturity 12/20/2029 - 06/20/2030 Series II
Summary of Investment Holdings [Line Items]
Derivative liability, notional amount	(2,974)
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $39,103; $210,898; $250,001, respectively Type Swaptions Maturity 2/26/2027
Summary of Investment Holdings [Line Items]
Notional amount	250,001
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $39,103; $210,898; $250,001, respectively Type Swaptions Maturity 2/26/2027 Series I
Summary of Investment Holdings [Line Items]
Notional amount	39,103
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $39,103; $210,898; $250,001, respectively Type Swaptions Maturity 2/26/2027 Series II
Summary of Investment Holdings [Line Items]
Notional amount	210,898
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $54,744; $295,257; $350,001, respectively Type Swaptions Maturity 2/26/2027
Summary of Investment Holdings [Line Items]
Notional amount	350,001
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $54,744; $295,257; $350,001, respectively Type Swaptions Maturity 2/26/2027 Series I
Summary of Investment Holdings [Line Items]
Notional amount	54,744
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $54,744; $295,257; $350,001, respectively Type Swaptions Maturity 2/26/2027 Series II
Summary of Investment Holdings [Line Items]
Notional amount	295,257
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $90,125; $374,875; $465,000, respectively Type Interest Rate Swaps Maturity 03/07/2027 - 11/04/2028
Summary of Investment Holdings [Line Items]
Notional amount		465,000
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $90,125; $374,875; $465,000, respectively Type Interest Rate Swaps Maturity 03/07/2027 - 11/04/2028 Series I
Summary of Investment Holdings [Line Items]
Notional amount		90,125
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of $90,125; $374,875; $465,000, respectively Type Interest Rate Swaps Maturity 03/07/2027 - 11/04/2028 Series II
Summary of Investment Holdings [Line Items]
Notional amount		$ 374,875
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of ($170,487); ($919,513); ($1,090,000), respectively Type Interest Rate Swaps Maturity 03/07/2027 - 07/02/2029
Summary of Investment Holdings [Line Items]
Derivative liability, notional amount	(1,090,000)
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of ($170,487); ($919,513); ($1,090,000), respectively Type Interest Rate Swaps Maturity 03/07/2027 - 07/02/2029 Series I
Summary of Investment Holdings [Line Items]
Derivative liability, notional amount	(170,487)
Open Futures Contract, Identifier [Axis]: Contract name USD Currency, Notional amount of ($170,487); ($919,513); ($1,090,000), respectively Type Interest Rate Swaps Maturity 03/07/2027 - 07/02/2029 Series II
Summary of Investment Holdings [Line Items]
Derivative liability, notional amount	$ (919,513)