Note 8 - Financial Highlights (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Financial Highlights [Table Text Block]

	Three Months Ended
	March 31,
	2017			2016
Net asset value per Share, beginning of period	$	11.16		$	10.25
Net investment loss (a)		(0.01	)		(0.01	)
Net realized and unrealized gain (b)		0.83			1.69
Net increase in net assets from operations		0.82			1.68
Net asset value per Share, end of period	$	11.98		$	11.93
Total return, at net asset value (c)(d)		7.35	%		16.39	%
Ratio to average net assets:
Net investment loss (e)		(0.25	) %		(0.25	) %
Expenses (e)		0.25	%		0.25	%