Interest Expense (Income) (Tables)

12 Months Ended

Dec. 31, 2014

Interest Revenue (Expense), Net [Abstract]

Schedule of Components of Interest Expense, Net

The components of net interest expense are as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Interest expense	$	174,142		$	151,986		$	173,503
Interest income		(4,886	)		(5,091	)		(11,128	)
Interest expense, net	$	169,256		$	146,895		$	162,375