Schedule of Investments (Unaudited) - Futures Contracts		3 Months Ended		12 Months Ended
		Mar. 31, 2021 USD ($) Contract		Dec. 31, 2020 USD ($) Contract
Schedule Of Investments [Line Items]
Currency Futures Contracts, Value		$ 27,664,805		$ 11,968,527
Futures [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Value		51,449	[1]	(3,045)	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		51,449	[1]	(3,045)	[2]
Futures [Member] | Long [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Value		(490,310)	[1]	151,732	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		$ (490,310)	[1]	$ 151,732	[2]
Futures [Member] | Long [Member] | Canadian, Dollars [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		115		51
Currency Futures Contracts, Expiration Date		Jun. 30, 2021		Mar. 31, 2021
Currency Futures Contracts, Notional Value		$ 9,150,550		$ 3,995,340
Currency Futures Contracts, Value		(76,605)	[1]	(4,526)	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		$ (76,605)	[1]	$ (4,526)	[2]
Futures [Member] | Long [Member] | New Zealand Dollar [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		129		57
Currency Futures Contracts, Expiration Date		Jun. 30, 2021		Mar. 31, 2021
Currency Futures Contracts, Notional Value		$ 9,008,070		$ 4,097,160
Currency Futures Contracts, Value		(284,205)	[1]	57,038	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		$ (284,205)	[1]	$ 57,038	[2]
Futures [Member] | Long [Member] | Norwegian, Krone [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		39		18
Currency Futures Contracts, Expiration Date		Jun. 30, 2021		Mar. 31, 2021
Currency Futures Contracts, Notional Value		$ 9,112,740		$ 4,192,560
Currency Futures Contracts, Value		(129,500)	[1]	99,220	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		(129,500)	[1]	99,220	[2]
Futures [Member] | Short [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Value		541,759	[1]	(154,777)	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		$ 541,759	[1]	$ (154,777)	[2]
Futures [Member] | Short [Member] | Euro Member Countries, Euro [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		62		26
Currency Futures Contracts, Expiration Date		Jun. 30, 2021		Mar. 31, 2020
Currency Futures Contracts, Notional Value		$ (9,100,050)		$ (3,979,950)
Currency Futures Contracts, Value		175,534	[1]	(30,180)	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		$ 175,534	[1]	$ (30,180)	[2]
Futures [Member] | Short [Member] | Japanese, Yen [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		81
Currency Futures Contracts, Expiration Date		Jun. 30, 2021
Currency Futures Contracts, Notional Value		$ (9,148,444)
Currency Futures Contracts, Value	[1]	160,431
Currency Futures Contracts, Unrealized Appreciation (Depreciation)	[1]	$ 160,431
Futures [Member] | Short [Member] | Switzerland, Francs [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract		69		28
Currency Futures Contracts, Expiration Date		Jun. 30, 2021		Mar. 31, 2020
Currency Futures Contracts, Notional Value		$ (9,138,187)		$ (3,962,700)
Currency Futures Contracts, Value		205,794	[1]	(10,227)	[2]
Currency Futures Contracts, Unrealized Appreciation (Depreciation)		$ 205,794	[1]	$ (10,227)	[2]
Futures [Member] | Short [Member] | Sweden, Kronor [Member]
Schedule Of Investments [Line Items]
Currency Futures Contracts, Number of Contracts | Contract				17
Currency Futures Contracts, Expiration Date				Mar. 31, 2021
Currency Futures Contracts, Notional Value				$ (4,140,860)
Currency Futures Contracts, Value	[2]			(114,370)
Currency Futures Contracts, Unrealized Appreciation (Depreciation)	[2]			$ (114,370)

[1] Unrealized Appreciation (Depreciation) and Value are presented above, net by contract.

[2] Unrealized Appreciation (Depreciation) and Value are presented above, net by contract