Investments in Available-for-Sale Securities (Tables)

12 Months Ended

Dec. 31, 2012

Available-for-sale Securities [Abstract]

Available-for-sale Securities [Table Text Block]

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

December 31, 2012										Balance Sheet
			Gross		Gross					Classification
			Unrealized		Unrealized			Fair		Short-Term		Other
	Cost Basis		Gains		Losses			Value		Investments		Assets
	(In thousands)
Available-for-sale:
U.S. government and agency securities	$	146,993	$	2	$	(412	)	$	146,583	$	146,583	$	—
Corporate notes and bonds	88,118		—		(396		)	87,722		87,722		—
Equity securities	5,271		2,704		(2,628		)	5,347		—		5,347
Total Investments	$	240,382	$	2,706	$	(3,436	)	$	239,652	$	234,305	$	5,347

The aggregate fair value of investments with unrealized losses was $223.3 million at December 31, 2012.

December 31, 2011										Balance Sheet
			Gross		Gross					Classification
			Unrealized		Unrealized			Fair		Short-Term
	Cost Basis		Gains		Losses			Value		Investments		Other Assets
	(In thousands)
Available-for-sale:
Equity securities	$	5,268	$	4,394	$	(2,122	)	$	7,540	$	—	$	7,540
Total Investments	$	5,268	$	4,394	$	(2,122	)	$	7,540	$	—	$	7,540