Investments in Available-for-Sale Securities (Tables)

9 Months Ended

Sep. 30, 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:

September 30, 2012										Balance Sheet
										Classification
			Unrealized		Unrealized			Fair		Short-Term
	Cost Basis		Gains		Losses			Value		Investments		Other Assets
	(In thousands)
Available-for-sale:
U.S. government and agency securities	$	72,964	$	—	$	(157	)	$	72,807	$	72,807	$	—
Corporate notes and bonds	26,664		—		(112		)	26,552		26,552		—
Equity securities	5,271		4,678		(2,514		)	7,435		—		7,435
Total Investments	$	104,899	$	4,678	$	(2,783	)	$	106,794	$	99,359	$	7,435

December 31, 2011										Balance Sheet
										Classification
			Unrealized		Unrealized			Recorded		Short-Term
	Cost Basis		Gains		Losses			Basis		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