Note 5. Short-Term Investments Available For Sale (Tables)

6 Months Ended

Jun. 30, 2012

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

Short-term investments available for sale - at fair value	June 30, 2012		December 31, 2011
Bonds - corporate issuances	$	12,287,271	$	10,400,905
Total short-term investments, available for sale	$	12,287,271	$	10,400,905

Available-for-sale Securities [Table Text Block]

	June 30, 2012				December 31, 2011
	Cost		Fair Value		Cost		Fair Value
Short-term investments
Bonds- corporate issuances	$	12,494,498	$	12,287,271	$	10,565,315	$	10,400,905
Equity securities		108,373		–		108,373		–
Total	$	12,602,871	$	12,287,271	$	10,673,688	$	10,400,905
Bond maturities
Within 3 months	$	3,121,030	$	3,013,150	$	5,128,560	$	5,036,920
Between 3-12 months		9,373,468		9,274,121		5,436,755		5,363,985
Total	$	12,494,498	$	12,287,271	$	10,565,315	$	10,400,905

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

	June 30, 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
Available for Sale
Bonds – corporate issuances	$	12,287,271	$	(207,227	)	$	–	$	–		$	12,287,271	$	(207,227	)
Equity securities		–		–			–		(108,373	)		–		(108,373	)
	$	12,287,271	$	(207,227	)	$	–	$	(108,373	)	$	12,287,271	$	(315,600	)

	December 31, 2011
	Less than 12 months					12 months or Longer				Total
	Fair Value		Gross Unrealized  Holding Losses			Fair Value		Gross Unrealized Holding Losses		Fair Value		Gross Unrealized Holding Losses
Available for Sale
Bonds – corporate issuances	$	10,400,905	$	(168,327	)	$	–	$	–	$	10,400,905	$	(168,327	)
Equity securities		–		(108,373	)		–		–		–		(108,373	)
	$	10,400,905	$	(276,700	)	$	–	$	–	$	10,400,905	$	(276,700	)

Investment Income [Table Text Block]

	Three Months Ended June 30,					Six Months Ended June 30,
	2012			2011		2012				2011
Interest and dividend income	$	130,692		$	97		$	264,585			$	564
Realized losses		(68,616	)		–			(197,176	)			–
	$	62,076		$	97		$	67,409			$	564