Interest Expense, Net (Tables)

9 Months Ended

Sep. 30, 2011

Interest Expense, Net [Abstract]

Components Of Interest Income / (Expense)

	Three months ended September 30,						Nine months ended September 30
	2011			2010			2011			2010
Interest income	$	127		$	1,294		$	1,008		$	3,666
Interest expense		(29,160	)		(27,043	)		(85,254	)		(81,514	)
Total interest (expense), net	($	29,033	)	($	25,749	)	($	84,246	)	($	77,848	)