Restructuring Costs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Restructuring Reserve [Roll Forward]
Accrued expense balance as of December 31, 2014	$ (7,956)
Amounts paid	18,815
Additional accrued expense	(15,003)
Accrued expense balance as of December 31, 2015	$ (4,144)