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

9 Months Ended

Sep. 30, 2015

Cash, Cash Equivalents, and Short-term Investments [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)
September 30, 2015
Certificates of deposit	$	5,999	$	4	$	—		$	6,003
Commercial paper	58,299		21		—			58,320
Corporate debt securities	86,657		13		(31		)	86,639
State and political subdivisions debt securities	236,075		58		(42		)	236,091
Total marketable securities	$	387,030	$	96	$	(73	)	$	387,053

December 31, 2014
Certificates of deposit	$	54,000	$	10	$	—		$	54,010
Commercial paper	52,297		7		(4		)	52,300
Corporate debt securities	136,181		1		(94		)	136,088
State and political subdivisions debt securities	231,819		5		(112		)	231,712
Total marketable securities	$	474,297	$	23	$	(210	)	$	474,110

- 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