Quarterly report pursuant to Section 13 or 15(d)

Restructuring Narrative (Details)

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Restructuring Narrative (Details)
ft² in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended 18 Months Ended
Mar. 31, 2016
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
ft²
Dec. 31, 2015
USD ($)
ft²
Restructuring Cost and Reserve [Line Items]        
Restructuring and related cost, incurred       $ 4,700
Restructuring charges $ 0 $ 302 $ 411  
Termination benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 0 238 $ 238 $ 2,700
Leases and other contractual obligations        
Restructuring Cost and Reserve [Line Items]        
Area of closed facility (in sq ft) | ft²     11 11
Percentage of company square footage being closed     6.00% 6.00%
Restructuring charges 0 64 $ 107 $ 400
Other        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 0 $ 0 $ 66 $ 1,600