Investments in Available-for-Sale Securities (Tables)

9 Months Ended

Sep. 30, 2015

Available-for-sale Securities [Abstract]

Available-for-sale Securities

The Company's investments in available-for-sale marketable securities are as follows:

	September 30, 2015
										Balance Sheet
			Accumulated							Classification
			Gross Unrealized					Fair		Short-Term		Other
	Cost Basis		Gains		Losses			Value		Investments		Assets
	(In thousands)
Available-for-sale:
Corporate notes and bonds	$	199,440	$	359	$	(68	)	$	199,731	$	199,731	$	—
Equity securities	3,937		549		(2,871		)	1,615		—		1,615
Total Investments	$	203,377	$	908	$	(2,939	)	$	201,346	$	199,731	$	1,615

	December 31, 2014
										Balance Sheet
			Gross		Gross					Classification
			Unrealized		Unrealized			Fair		Short-Term		Other
	Cost Basis		Gains		Losses			Value		Investments		Assets
	(In thousands)
Available-for-sale:
Corporate notes and bonds	$	253,590	$	—	$	(4,636	)	$	248,954	$	248,954	$	—
Equity securities	3,910		4,125		(2,890		)	5,145		—		5,145
Total Investments	$	257,500	$	4,125	$	(7,526	)	$	254,099	$	248,954	$	5,145