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Note 2 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

Schedule of Stockholders Equity [Table Text Block]

		Balance at December 31, 2013				ASU 2013-08 Transition Adjustment				Balance at January 1, 2014
Redeemable capital Shares		$	6,240,747			$	(6,240,747	)		$	—
Shareholders’ equity			—				6,240,747				6,240,747

Activity in Silver Bullion [Table Text Block]

		Ounces				Average Cost				Fair Value				Realized Gain (Loss)
Beginning balance			322,872.9			$	6,310,696			$	6,738,358			$	—
Silver bullion contributed			30,743.4				581,957				581,957				—
Silver bullion distributed			(3,118.6	)			(60,967	)			(62,616	)			1,649
Silver bullion sold			(411.3	)			(8,041	)			(8,297	)			256
Net realized gain on silver bullion			—				—				1,905				—
Net change in unrealized appreciation/depreciation on investment in silver bullion			—				—				(1,261,329	)			—
Ending balance			350,086.4			$	6,823,645			$	5,989,978			$	1,905

		Ounces				Average Cost				Fair Value				Realized Gain (Loss)
Beginning balance			320,177.8			$	6,243,467			$	6,243,467			$	—
Silver bullion contributed			60,841.0				1,184,514				1,184,514				—
Silver bullion distributed			(29,693.0	)			(580,118	)			(597,071	)			16,953
Silver bullion sold			(1,239.4	)			(24,218	)			(24,582	)			364
Net realized gain on silver bullion			—				—				17,317				—
Net change in unrealized appreciation/depreciation on investment in silver bullion			—				—				(833,667	)			—
Ending balance			350,086.4			$	6,823,645			$	5,989,978			$	17,317

		Ounces				Average Cost				Fair Value				Realized Gain (Loss)
Beginning balance			318,481.3			$	6,006,558			$	6,006,558			$	—
Silver contributed			29,225.5				601,985				601,985				—
Silver distributed			(5,544.4	)			(139,664	)			(124,455	)			(15,209	)
Silver sold			(411.1	)			(10,397	)			(8,642	)			(1,755	)
Adjustment to silver bullion inventory(a)			—				950,686				—				—
Adjustment for realized loss			—				—				(16,964	)			—
Adjustment for unrealized gain on silver bullion			—				—				950,686				—
Ending balance			341,751.3			$	7,409,168			$	7,409,168			$	(16,964	)

		Ounces				Average Cost				Fair Value				Realized Gain (Loss)
Beginning balance			324,239.1			$	8,135,003			$	9,710,962			$	—
Silver contributed			78,089.7				1,992,277				1,992,277				—
Silver distributed			(59,304.6	)			(1,514,965	)			(1,501,375	)			(13,590	)
Silver sold			(1,272.9	)			(32,389	)			(32,245	)			(144	)
Adjustment to silver bullion inventory(b)			—				(1,170,758	)			—				—
Adjustment for realized loss			—				—				(13,734	)			—
Adjustment for unrealized loss on silver bullion			—				—				(2,746,717	)			—
Ending balance			341,751.3			$	7,409,168			$	7,409,168			$	(13,734	)

Schedule of Capital Units [Table Text Block]

		Nine Months Ended September 30, 2014
		Shares				Amount
Shares issued			63,350			$	1,184,514
Shares redeemed			(30,900	)			(597,071	)
Net increase			32,450			$	587,443

Temporary Equity [Table Text Block]

		Year Ended December 31, 2013
		Shares				Amount
Beginning balance			335,000			$	9,706,654
Shares issued			85,750				2,096,484
Shares redeemed			(88,250	)			(2,031,644	)
Redemption value adjustment			—				(3,530,747	)
Ending balance			332,500			$	6,240,747

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