Interest Expense (Income) (Tables)

12 Months Ended

Dec. 31, 2017

Banking and Thrift, Interest [Abstract]

Schedule of Components of Net Interest Expense

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

	Year Ended December 31,
	2017			2016			2015
Interest expense	$	187,282		$	181,179		$	177,543
Interest income		(13,702	)		(11,935	)		(4,012	)
Interest expense, net	$	173,580		$	169,244		$	173,531