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

9 Months Ended

Sep. 30, 2013

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, 2013
Certificates of deposit	$	69,756	$	16	$	(4	)	$	69,768
Commercial paper	40,237		10		—			40,247
Corporate debt securities	66,791		8		(16		)	66,783
State and political subdivisions debt securities	485,394		34		(62		)	485,366
Total marketable securities	$	662,178	$	68	$	(82	)	$	662,164

December 31, 2012
Certificates of deposit	$	82,791	$	14	$	(6	)	$	82,799
Commercial paper	45,737		17		—			45,754
Corporate debt securities	49,587		2		(30		)	49,559
State and political subdivisions debt securities	457,615		26		(51		)	457,590
Total marketable securities	$	635,730	$	59	$	(87	)	$	635,702

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References+ Details