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Note 6 - Derivative Instruments and Hedging Activities (Details) - Movement in AOCI Balance - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Movement in AOCI Balance [Abstract]
Opening AOCI balance	$ (1,293,175)		$ (946,676)
Opening AOCI balance	459,851		324,235
Opening AOCI balance	(833,324)		(622,441)
Other comprehensive income (loss)before reclassifications	(1,124,049)		(2,693,436)
Other comprehensive income (loss)before reclassifications	399,713		970,188
Other comprehensive income (loss)before reclassifications	(724,336)	$ (437,519)	(1,723,248)	$ (602,901)
Amount reclassified from accumulated other comprehensive income	565,379		1,788,267
Amount reclassified from accumulated other comprehensive income	(201,049)		(635,908)
Amount reclassified from accumulated other comprehensive income	364,330	$ 57,701	1,152,359	$ 437,893
Other comprehensive income (loss)	(558,670)		(905,169)
Other comprehensive income (loss)	198,664		334,280
Other comprehensive income (loss)	(360,006)		(570,889)
Ending AOCI balance	(1,851,845)		(1,851,845)
Ending AOCI balance	658,515		658,515
Ending AOCI balance	$ (1,193,330)		$ (1,193,330)

X

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, tax expense (benefit). Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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