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Significant Accounting Policies (Quantitative Effect Of Adoption Of Investment Company Accounting) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Jan. 02, 2014
Dec. 31, 2013
Dec. 31, 2012
Significant Accounting Policies [Abstract]        
Value at December 31, 2013 at lower of cost or market value     $ 1,040,003  
Value at January 1, 2014 at fair value 1,104,346 [1],[2] 1,040,003 1,040,003 [1],[3] 1,561,925
Gain / (loss) as a result of change in accounting treatment $ 0      
[1] At March 31, 2014, the investment in gold is recorded at fair value. At December 31, 2013, the investment in gold was recorded at the lower of cost or market value. Refer to note 2.1 for a breakdown of cost and fair value of the investment in gold.
[2] Effective January 1, 2014, the Trust has adopted the provisions of Topic 946, Investment Companies, and follows specialized accounting. Refer to Note 2.1 for additional information.
[3] Derived from audited Statement of Financial Condition as of December 31, 2013.