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

6 Months Ended

Jun. 30, 2014

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

The following is a summary of our marketable securities:



	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value (Net Carrying Amount)
	(In thousands)
June 30, 2014
Certificates of deposit	$	79,704	$	15	$	(3	)	$	79,716
Commercial paper	76,670		16		—			76,686
Corporate debt securities	146,455		34		(18		)	146,471
State and political subdivisions debt securities	376,789		29		(23		)	376,795
Total marketable securities	$	679,618	$	94	$	(44	)	$	679,668

December 31, 2013
Certificates of deposit	$	74,802	$	21	$	(1	)	$	74,822
Commercial paper	78,216		28		—			78,244
Corporate debt securities	96,889		6		(44		)	96,851
State and political subdivisions debt securities	475,235		49		(41		)	475,243
Total marketable securities	$	725,142	$	104	$	(86	)	$	725,160

- 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