Acquisitions (Tables)

12 Months Ended

Dec. 31, 2017

2015 Acquisitions [Member]

Business Acquisition [Line Items]

Purchase Price Allocations Of Assets Acquired And Liabilities Assumed

(in thousands)	2015
Fixed assets	$	1,505
Other intangible assets, net		57,066
Goodwill		44,772
Other assets, net of cash acquired		22,449
Liabilities		(33,342)
Net assets acquired	$	92,450