Restructuring and Other Charges - Restructuring Reserve Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 14	$ 258	$ 3,779	$ 1,514
Restructuring and Business Combination Related Expenses, Non-Recurring Legal Expenses	0	372	109	421
Business Combination, Integration Related Costs	134	728	562	1,671
Restructuring and Business Combination Related Expenses, Facility Reductions	0	$ 0	392	$ (6)
Balance accrued as of December 31, 2013			753
Restructuring Charges			4,710
Restructuring Reserve, Accrual Adjustment			(539)
Expenditures			(4,175)
Balance accrued as of September 30, 2014	749		749
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			4,318
Restructuring Reserve, Accrual Adjustment			(539)
Expenditures			(3,935)
Balance accrued as of September 30, 2014	10		10
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			(240)
Balance accrued as of September 30, 2014	$ 739		$ 739