Note 9 - Other Comprehensive Income (Loss) (Details) - Accumulated Other Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accumulated Other Comprehensive Income [Abstract]
Beginning balance			$ 28,088,103	$ 20,334,585
Beginning balance			(5,548,379)	(6,729,101)
Beginning balance			22,539,724	13,605,484
Other comprehensive loss before reclassifications			(14,353,789)
Other comprehensive loss before reclassifications			(14,353,789)
Amounts reclassified from accumulated other comprehensive income	(1,950,840)	(186,463)	(1,995,879)	(317,421)
Amounts reclassified from accumulated other comprehensive income	127,486	113,097	382,460	455,530
Amounts reclassified from accumulated other comprehensive income	(1,823,354)		(1,613,419)
Net other comprehensive income (loss)	(2,367,086)	3,986,830	(16,349,668)	8,691,309
Net other comprehensive income (loss)			382,460	2,118,170
Net other comprehensive income (loss)			(15,967,208)	10,809,479
Ending balance	11,738,435	29,025,894	11,738,435	29,025,894
Ending balance	(5,165,919)	(4,610,931)	(5,165,919)	(4,610,931)
Ending balance	$ 6,572,516	$ 24,414,963	$ 6,572,516	$ 24,414,963