Restructuring and Related Activities (Details)		3 Months Ended		15 Months Ended
	Dec. 14, 2015 USD ($) employee	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | employee	100
Restructuring Reserve		$ 3,094,000		$ 3,094,000	$ 359,000
Restructuring Charges		3,344,123	$ 0	4,397,000
Payments for Restructuring		(609,000)
Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		874,000		874,000	75,000
Restructuring Charges		799,000
Payments for Restructuring		0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		2,220,000		2,220,000	$ 284,000
Restructuring Charges		2,545,000
Payments for Restructuring		$ (609,000)
International [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges				3,300,000
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges				800,000
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges				$ 300,000
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 6,000,000
Maximum [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	1,100,000
Maximum [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4,900,000
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4,500,000
Minimum [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	1,000,000
Minimum [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 3,500,000