Restructuring Activities and Other Charges (Details) $ in Thousands		3 Months Ended		9 Months Ended		10 Months Ended	22 Months Ended
	Dec. 14, 2015 employee	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				$ 1,566
Cash payments				(614)
Balance at September 30, 2017		$ 952		952			$ 952
Number of positions eliminated | employee	100
Restructuring charges		0	$ 466	0	$ 4,433	$ 5,500	6,700
North America [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges						300
International [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges						4,200
Other Segments [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges						$ 1,000
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				1,349
Cash payments				(397)
Balance at September 30, 2017		952		952			952
Restructuring charges							5,600
Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				17
Cash payments				(17)
Balance at September 30, 2017		0		0			0
Restructuring charges							1,100
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				200
Cash payments				(200)
Balance at September 30, 2017		$ 0		$ 0			$ 0