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Significant Accounting Policies (Schedule Of Investment In Palladium) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) oz	Mar. 31, 2018 USD ($) oz
Significant Accounting Policies [Abstract]
Opening balance (in Ounces) | oz	146,915.9	228,863.1
Creations (in Ounces) | oz	33,134.3	14,288.0
Redemptions (in Ounces) | oz	(9,464.5)	(4,763.0)
Transfers of palladium to pay expenses (in Ounces) | oz	(222.9)	(343.4)
Closing balance (in Ounces) | oz	170,362.8	238,044.7
Investment in palladium, fair value, Opening balance	$ 185,555	$ 241,679
Creations	48,313	14,926
Redemptions	(13,500)	(4,949)
Realized gain on palladium distributed for the redemption of Shares	5,408	1,674
Transfers of palladiuim to pay expenses	(300)	(363)
Realized gain on palladium transferred to pay expenses	118	127
Change in unrealized gain/ (loss) on investment in palladium	11,210	(22,191)
Investment in palladium, fair value, closing balance	$ 236,804	$ 230,903

X

- Definition

Change in unrealized gain (loss) on investment in Bullion

+ References

No definition available.

+ Details

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Period Type:	duration

X

- Definition

Cost of Bullion transferred to pay Trust's expenses.

+ References

No definition available.

+ Details

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X

- Definition

Ounces of bullion received into the Trust's account in respect of creations.

+ References

No definition available.

+ Details

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X

- Definition

Amount of creations of bullion in investment.

+ References

No definition available.

+ Details

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X

- Definition

Realized gain or loss during the period on bullion distributed for the redemption of Shares. Realized gains or losses are calculated on a trade date basis using average cost.

+ References

No definition available.

+ Details

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- Definition

Ounces of bullion paid out of the Trust's account in respect of redemptions.

+ References

No definition available.

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X

- Definition

Ounces of bullion transferred to pay Trust's expenses.

+ References

No definition available.

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X

- Definition

Value of bullion distributed at average cost for the redemption of Shares excluding bullion payable.

+ References

No definition available.

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- References

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- Definition

Gain (loss) related to the sale of trust assets (includes, but is not limited to, gold and silver) to pay trust expenses.

+ References

No definition available.

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- Definition

Investments held in physical commodities, such as gold, silver, platinum, crude oil, coal, sugar, rice, wheat.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Quantity of the investment. Indicate the measure in the unit of measure. This is commonly used for investments other than securities. For example, if the investment is gold, the balance would be the number of ounces and the unit of measure would indicate "ounces".

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13.2, Column B)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010

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