Restructuring and Other Charges - Restructuring Reserve Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ (268)	$ 403	$ 3,765	$ 1,256
Restructuring and Business Combination Related Expenses, Non-Recurring Legal Expenses	0	0	109	0
Business Combination, Integration Related Costs	435	539	428	992
Restructuring and Business Combination Related Expenses, Facility Reductions	392	$ 0	392	$ (6)
Balance accrued as of December 31, 2013			753
Restructuring Charges			4,713
Restructuring Reserve, Accrual Adjustment			(556)
Expenditures			(3,549)
Balance accrued as of September 30, 2014	1,361		1,361
Restructuring Reserve, Noncurrent	300		300
Severance, Payroll Taxes and Other Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance accrued as of December 31, 2013			166
Restructuring Charges			4,321
Restructuring Reserve, Accrual Adjustment			(556)
Expenditures			(3,463)
Balance accrued as of September 30, 2014	468		468
Lease Abandonment Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance accrued as of December 31, 2013			587
Restructuring Charges			392
Restructuring Reserve, Accrual Adjustment			0
Expenditures			(86)
Balance accrued as of September 30, 2014	$ 893		$ 893