Investments in Available-for-Sale Securities (Tables)

3 Months Ended

Mar. 31, 2016

Available-for-sale Securities [Abstract]

Available-for-sale Securities

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

	March 31, 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	$	47,001	$	66	$	—		$	47,067	$	47,067	$	—
Corporate notes and bonds	$	151,782	$	38	$	(99	)	$	151,721	$	151,721	$	—
Equity securities	1,049		676		—			1,725		—		1,725
Total Investments	$	199,832	$	780	$	(99	)	$	200,513	$	198,788	$	1,725

	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