Note 2 - Summary of Significant Accounting Policies (Details) - An Adjustment to Reclassify the Balance of Redeemable Capital Shares (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013		Dec. 31, 2012
Note 2 - Summary of Significant Accounting Policies (Details) - An Adjustment to Reclassify the Balance of Redeemable Capital Shares [Line Items]
Redeemable capital Shares			$ 6,271,029		$ 11,645,298
Redeemable capital Shares			(6,271,029)
Shareholders’ equity	6,964,507	[1]	0		(2,332,728)	[2]
Shareholders’ equity			6,271,029
Scenario, Previously Reported [Member]
Note 2 - Summary of Significant Accounting Policies (Details) - An Adjustment to Reclassify the Balance of Redeemable Capital Shares [Line Items]
Redeemable capital Shares			6,271,029
Scenario, After Application of ASU 2013-08 [Member]
Note 2 - Summary of Significant Accounting Policies (Details) - An Adjustment to Reclassify the Balance of Redeemable Capital Shares [Line Items]
Shareholders’ equity	$ 6,964,507	[1],[2]	$ 6,271,029	[1],[2]

[1] Represents net asset value. Please refer to Note 2D.

[2] The Trust reclassified redeemable capital Shares as of December 31, 2013 into shareholders' equity as part of its transition to investment company accounting effective January 1, 2014. Please refer to Note 2B.