Acquisitions (Tables)

12 Months Ended

Dec. 31, 2011

Acquisitions [Abstract]

Purchase Price Allocation To Assets Acquired And Liabilities Assumed

	December 31, 2011
(in thousands)
Property and equipment	$	3,597
Intangible assets		89,881
Other assets, net of cash acquired and liabilities assumed		(2,828	)
Net assets acquired	$	90,650

	December 31, 2010
(in thousands)
Property and equipment	$	5,523
Intangible assets		25,932
Other assets, net of cash acquired and liabilities assumed		(4,926	)
Gain from bargain purchase		(37	)
Net assets acquired	$	26,492