Derivative Instruments (Schedule Of Average Notional Value By Sector Of Futures And Forward Currency Contracts) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Long Positions [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	$ 406,749,085	$ 366,681,862
Long Positions [Member] | Futures Contracts [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	357,820,217	321,068,986
Long Positions [Member] | Currencies [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	591,981
Long Positions [Member] | Energies [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	23,071,750	9,628,918
Long Positions [Member] | Grains [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	6,082,996	6,007,846
Long Positions [Member] | Interest Rates [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	241,959,967	227,557,923
Long Positions [Member] | Livestock [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	407,116	124,126
Long Positions [Member] | Metals [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	16,029,509	15,268,657
Long Positions [Member] | Softs [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	1,488,507	1,363,060
Long Positions [Member] | Stock Indices [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	68,188,391	61,118,456
Long Positions [Member] | Forward Currency Contracts [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	48,928,868	45,612,876
Short Positions [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	122,810,978	91,120,792
Short Positions [Member] | Futures Contracts [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	75,246,901	68,047,137
Short Positions [Member] | Currencies [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	1,769,110
Short Positions [Member] | Energies [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	1,758,221	6,039,758
Short Positions [Member] | Grains [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	8,401,994	3,897,622
Short Positions [Member] | Interest Rates [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	39,006,895	44,906,141
Short Positions [Member] | Livestock [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	453,276	141,586
Short Positions [Member] | Metals [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	1,433,054	1,853,382
Short Positions [Member] | Softs [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	1,711,024	1,016,965
Short Positions [Member] | Stock Indices [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	20,713,327	10,191,683
Short Positions [Member] | Forward Currency Contracts [Member]
Derivative [Line Items]
Average notional amount of futures and forward currency contracts	$ 47,564,077	$ 23,073,655