Cash and Cash Equivalents and Investments in Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2012

Cash And Cash Equivalents And Investments In Marketable Securities [Abstract]

The following is a summary of our available-for-sale securities:



	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value (Net Carrying Amount)
	(In thousands)
September 30, 2012
Marketable debt securities (state and political subdivisions)	$	285,915	$	26	$	(13	)	$	285,928

December 31, 2011
Marketable debt securities (state and political subdivisions)	$	260,879	$	74	$	—		$	260,953
Equity securities	610		143		—			753
Total marketable securities	$	261,489	$	217	$	—		$	261,706

- Definition

Tabular disclosure of available-for-sale securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt.

+ References

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+ Details