Note 3 - Short Term Investments Available For Sale (Tables)

12 Months Ended

Dec. 31, 2012

Available-For-Sale Securities at Fair Value [Table Text Block]

	December 31,
Short-term investments available for sale, at fair value	2012		2011
Bonds – corporate issuances	$	8,037,620	$	10,157,160
Equity securities		–		–
Total	$	8,037,620	$	10,157,160

Available-for-sale Securities [Table Text Block]

	December 31, 2012				December 31, 2011
	Cost		Fair Value		Cost		Fair Value
Short-term investments
Bonds- corporate issuances	$	8,164,227	$	8,037,620	$	10,325,487	$	10,157,160
Equity securities		–		–		108,373		–
Total	$	8,164,227	$	8,037,620	$	10,433,860	$	10,157,160
Bond maturities
Within 3 months	$	3,053,740	$	3,002,350	$	5,128,560	$	5,036,920
Between 3-12 months		5,110,487		5,035,270		5,196,927		5,120,240
Total	$	8,164,227	$	8,037,620	$	10,325,487	$	10,157,160

Schedule of Other Nonoperating Income, by Component [Table Text Block]

	2012			2011		2010
Interest and dividend income	$	429,194		$	32,289		$	53,247
Realized losses, net		(376,872	)		–			(7,086	)
	$	52,322		$	32,289		$	46,161

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

	December 31, 2012
	Less than 12 months					12 months or Longer				Total
Description of Securities	Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses		Fair Value		Gross Unrealized Holding (Losses) Gains
Available for Sale
Bonds – corporate issuances	$	8,037,620	$	(126,607	)	$	–	$	–	$	8,037,620	$	(126,607	)
Equity securities		–		–			–		–		–		–
	$	8,037,620	$	(126,607	)	$	–	$	–	$	8,037,620	$	(126,607	)

	December 31, 2011
	Less than 12 months					12 months or Longer					Total
Description of Securities	Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses
Available for Sale
Bonds – corporate issuances	$	10,157,160	$	(168,327	)	$	–	$	–		$	10,157,160	$	(168,327	)
Equity securities		–		(93,924	)		–		(14,449	)		–		(108,373	)
	$	10,157,160	$	(262,251	)	$	–	$	(14,449	)	$	10,157,160	$	(276,700	)