Costs Associated With Restructuring Activities - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 3,264 $ 100 $ 5,726 $ 100
Restructuring and related cost, reversal of deferred rent 200   200  
Restructuring charges to date 12,800   12,800  
Expected total relocation costs 20,900   20,900  
Restructuring        
Restructuring Cost and Reserve [Line Items]        
Expected total relocation costs 13,000   13,000  
New Facility        
Restructuring Cost and Reserve [Line Items]        
Expected total relocation costs 3,900   3,900  
Other Relocation        
Restructuring Cost and Reserve [Line Items]        
Expected total relocation costs $ 4,000   $ 4,000