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Significant Accounting Policies (Schedule Of Investment In Palladium) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
oz
Dec. 31, 2011
oz
Dec. 31, 2010
oz
Significant Accounting Policies [Abstract]      
Opening balance (in Ounces) 588,255.6 1,089,108.1 [1] 0.0 [1]
Creations (in Ounces) 286,166.1 238,310.9 1,272,055.2 [1]
Redemptions (in Ounces) (157,419.8) (733,279.8) (179,276.9) [1]
Transfers of palladium to pay expenses (in Ounces) (4,527.4) (5,883.6) (3,670.2) [1]
Closing balance (in Ounces) 712,474.5 588,255.6 1,089,108.1 [1]
Opening balance $ 351,083 [2] $ 597,200 [1] $ 0 [1]
Creations 194,997 190,757 686,120 [1]
Redemptions (98,236) (433,432) (87,202) [1]
Transfers of palladium to pay expenses (2,806) (3,442) (1,718) [1]
Closing balance $ 445,038 [2] $ 351,083 [2] $ 597,200 [1]
[1] Date of Inception
[2] The investment in palladium is valued at the lower of cost or market value. Refer to note 2.1 for a breakdown of cost and market value of the investment in palladium.