Note 8 - Financial Highlights (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended March 31,
	2016			2015
Net asset value per Share, beginning of period	$	10.25		$	11.61
Net investment loss (a)		(0.01	)		(0.01	)
Net realized and unrealized gain (loss) (b)		1.69			(0.12	)
Net increase (decrease) in net assets from operations		1.68			(0.13	)
Net asset value per Share, end of period	$	11.93		$	11.48
Total return, at net asset value (c)(d)		16.39	%		(1.12	) %
Ratio to average net assets:
Net investment loss (e)		(0.25	) %		(0.25	) %
Expenses (e)		0.25	%		0.25	%