Restructuring Activities and Other Charges (Details) $ in Thousands		3 Months Ended		6 Months Ended		7 Months Ended	19 Months Ended
	Dec. 14, 2015 employee	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				$ 1,566
Cash payments				(366)
Balance at June 30, 2017		$ 1,200		1,200			$ 1,200
Number of positions eliminated | employee	100
Restructuring charges		0	$ 623	0	$ 3,967	$ 5,000	6,700
North America [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges						300
International [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges						3,900
Other Segments [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges						$ 800
Contract Termination [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				17
Cash payments				(17)
Balance at June 30, 2017		0		0			0
Restructuring charges							1,100
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				200
Cash payments				0
Balance at June 30, 2017		200		200			200
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Balance at December 31, 2016				1,349
Cash payments				(349)
Balance at June 30, 2017		$ 1,000		$ 1,000			1,000
Restructuring charges							$ 5,600