Interest Expense, Net (Components Of Interest Expense, Net) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest income	$ 575	$ 356	$ 820	$ 881
Interest expense	(26,181)	(28,717)	(52,728)	(56,094)
Total interest expense, net	$ (25,606)	$ (28,361)	$ (51,908)	$ (55,213)