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Significant Accounting Policies (Schedule Of Unrealized Gains Or Losses On The Trust's Palladium Holdings) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 29, 2009
Significant Accounting Policies [Abstract]        
Investment in palladium - average cost $ 445,038 [1] $ 351,083 [1] $ 597,200 [2] $ 0 [2]
Unrealized gain on investment in palladium 52,982 23,047    
Investment in palladium - market value $ 498,020 $ 374,130    
[1] 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.
[2] Date of Inception