Note 3 - Short-Term Investments

6 Months Ended

Jun. 30, 2011

Available-for-sale Securities [Table Text Block]

Note 3 — Short-Term Investments

The Company’s investments in marketable debt and equity securities are classified as available-for-sale and are reported at fair market value with the net unrealized gain or (loss) reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity. Short-term investments consisted of the following:

	As of June 30, 2011									As of December 31, 2010
			Gross Unrealized									Gross Unrealized
	Cost		Gains		(Losses)			Market Value		Cost		Gains		(Losses)			Market Value
Debt securities issued by states of the United States and political subdivisions of the states	$	73,571	$	44	$	(7	)	$	73,608	$	32,140	$	2	$	(10	)	$	32,132
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies		2,703		-		-			2,703		-		-		-			-
Commercial paper		42,902		24		(8	)		42,918		-		-		-			-
Corporate debt securities		25,898		-		(18	)		25,880		4,870		-		(2	)		4,868
Total	$	145,074	$	68	$	(33	)	$	145,109	$	37,010	$	2	$	(12	)	$	37,000

The cost of marketable securities sold is determined by the specific identification method with any realized gains or losses reflected in income.  The Company had no realized gains or losses during the three and six months ended June 30, 2011 and 2010.

The Company believes unrealized losses related to debt securities are not other-than-temporary. Debt securities in an unrealized loss position primarily included investments in municipal bonds and corporate debt securities.

Short-term investments had the following maturities as of June 30, 2011:

Maturities	Amount
Year 2011	$	79,437
Year 2012	65,672
Thereafter	—
Total	$	145,109