Restructuring Charges - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) employee	Sep. 30, 2014 USD ($)
Restructuring Charges
Restructuring charge	$ 1,002	$ 21,244	$ 1,738	$ 22,650
2014 Plan
Restructuring Charges
Expected positions impacted by 2014 Plan (people) | employee			280
Total Anticipated Charges	26,939		$ 26,939
Restructuring charge	469		1,126
Employee Severance and Termination | 2014 Plan
Restructuring Charges
Total Anticipated Charges	20,000		20,000
Restructuring charge			499
Professional Fees, Office Closures and Other | 2014 Plan
Restructuring Charges
Total Anticipated Charges	7,000		7,000
Restructuring charge			627
Contract Termination
Restructuring Charges
Restructuring charge	500		500
Contract Termination | Accrued Liabilities
Restructuring Charges
Restructuring charge	$ 200		$ 200