Note 2 - Summary of Significant Accounting Policies (Details) - Share Activity (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Share Activity [Abstract]
Shares issued	30,800	63,250
Shares issued	$ 389,402	$ 928,370
Shares redeemed	(29,600)	(244,800)
Shares redeemed	(360,752)	(3,341,845)
Net increase	1,200
Net increase	$ 28,650	$ 2,960,794