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

6 Months Ended

Jun. 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)
June 30, 2015
Certificates of deposit	$	20,998	$	11	$	—		$	21,009
Commercial paper	29,957		17		—			29,974
Corporate debt securities	68,339		2		(43		)	68,298
State and political subdivisions debt securities	273,700		11		(133		)	273,578
Total marketable securities	$	392,994	$	41	$	(176	)	$	392,859

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