Investments in Available-for-Sale Securities (Tables)

6 Months Ended

Jun. 30, 2016

Available-for-sale Securities [Abstract]

Available-for-sale Securities

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

	June 30, 2016
										Balance Sheet
										Classification
			Gross Unrealized					Fair		Short-Term		Other
	Cost Basis		Gains		Losses			Value		Investments		Assets
	(In thousands)
Available-for-sale:
U.S. government and agency securities	$	47,392	$	120	$	—		$	47,512	$	47,512	$	—
Corporate notes and bonds	155,952		38		(85		)	155,905		155,905		—
Equity securities	1,165		1,064		—			2,229		—		2,229
Total Investments	$	204,509	$	1,222	$	(85	)	$	205,646	$	203,417	$	2,229

	December 31, 2015
										Balance Sheet
										Classification
			Gross Unrealized					Fair		Short-Term		Other
	Cost Basis		Gains		Losses			Value		Investments		Assets
	(In thousands)
Available-for-sale:
U.S. government and agency securities	$	10,007	$	—	$	(12	)	$	9,995	$	9,995	$	—
Corporate notes and bonds	190,496		—		(299		)	190,197		190,197		—
Equity securities	3,938		668		(2,888		)	1,718		—		1,718
Total Investments	$	204,441	$	668	$	(3,199	)	$	201,910	$	200,192	$	1,718