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Significant Accounting Policies (Schedule Of Platinum Receivable And Payable) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Significant Accounting Policies [Abstract]    
Palladium receivable $ 0pall_BullionReceivableAtMarketValue $ 0pall_BullionReceivableAtMarketValue
Palladium payable $ 0pall_BullionPayableAtMarketValue $ 11,617pall_BullionPayableAtMarketValue