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Cost of silver sold during the period to pay the trust's expenses.

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).

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The increase (decrease) during the reporting period in cash and cash equivalents. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The amount of cash paid during the current period for fees which are not defined elsewhere in the taxonomy.

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Statements of Cash Flows (USD $) In Thousands	3 Months Ended		6 Months Ended		12 Months Ended
Statements of Cash Flows (USD $) In Thousands	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Proceeds from sales of silver			$ 29,286	$ 13,026
Expenses - Sponsor's fees paid			(29,286)	(13,026)
Increase (decrease) in cash
Cash, beginning of period
Cash, end of period
RECONCILIATION OF NET INCOME TO NET CASH PROVIDED BY OPERATING ACTIVITIES:
Net income	1,954,910	51,677	2,420,400	99,973	234,419
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on silver distributed for the redemption of Shares	(1,962,478)	(56,779)	(2,435,610)	(110,206)
Cost of silver sold to pay expenses	8,263	5,038	14,915	10,287
Increase (decrease) in Sponsor's fees payable			295	(54)
Net cash provided by operating activities
Supplemental disclosure of non-cash information:
Carrying value of silver received for creation of Shares			3,174,587	292,999
Carrying value of silver distributed for redemption of Shares, at average cost			$ (2,468,315)	$ (371,350)