Supplemental Financial Information (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure Supplemental Financial Information Supplemental Consolidated Balance Sheet Information [Abstract]

Schedule of Other Current Assets and Other Current Liabilities

Other current liabilities consisted of the following:

	September 30,		December 31,
	2013		2012
	(in thousands)
Other Current Liabilities:
Deferred Revenue - Current Portion	$	19,266	$	14,546
Other	9,913		11,937
	$	29,179	$	26,483

Schedule of Equity Changes

Changes in equity during the nine months ended September 30, 2013 are presented below:

	Stockholders' Equity			Noncontrolling Interest			Total Equity
	(in thousands)
Balance at December 31, 2012	$	882,762		$	—		$	882,762
Net Income (Loss)	33,074			(39		)	33,035
Acquisition of Interest in Discovery	—			26,448			26,448
Acquisition of Noncontrolling Interest in Discovery	(39		)	(26,409		)	(26,448		)
Compensation Expense Recognized	7,464			—			7,464
Repurchase of Common Stock	(2,044		)	—			(2,044		)
Excess Tax Benefit, Net from Stock-Based Arrangements	842			—			842
Other	313			—			313
Balance at September 30, 2013	$	922,372		$	—		$	922,372