Investments (Tables)

9 Months Ended

Sep. 30, 2013

Investments [Abstract]

Investments in Marketable Equity Securities [Table Text Block]

	As of
	September 30,		December 31,
(in thousands)	2013		2012
Total cost	$	193,159	$	195,832
Net unrealized gains		264,810		184,255
Total Fair Value	$	457,969	$	380,087