Annual report pursuant to Section 13 and 15(d)

Restructuring Activity Restructuring Activity (Details 2)

v3.19.3.a.u2
Restructuring Activity Restructuring Activity (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Restructuring Reserve [Roll Forward]      
Restructuring Reserve $ (1,946) $ (3,039)  
Restructuring charges 2,636 3,838 $ 9,524
Restructuring Reserve, Accrual Adjustment (299)    
Payments for Restructuring (3,442) (4,004)  
Restructuring Reserve, Settled without Cash (4) (927)  
Restructuring Reserve (837) (1,946) (3,039)
One-time Termination Benefits [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (409) (239)  
Restructuring charges 1,150 2,094 8,353
Restructuring Reserve, Accrual Adjustment 0    
Payments for Restructuring (1,559) (1,924)  
Restructuring Reserve, Settled without Cash 0 0  
Restructuring Reserve 0 (409) (239)
Facility Closing [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (1,490)    
Restructuring charges 1,301 1,608 1,025
Restructuring Reserve (818) (1,490)  
Lease Related Impairment [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve   (2,693)  
Restructuring charges 1,301 1,608  
Restructuring Reserve, Accrual Adjustment (299)    
Payments for Restructuring (1,720) (1,884)  
Restructuring Reserve, Settled without Cash (46) (927)  
Restructuring Reserve     (2,693)
Other Restructuring [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (47) (107)  
Restructuring charges 185 136 146
Restructuring Reserve, Accrual Adjustment 0    
Payments for Restructuring (163) (196)  
Restructuring Reserve, Settled without Cash (50) 0  
Restructuring Reserve (19) $ (47) $ (107)
Restructuring - Long term [Domain]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (543)    
Restructuring - Long term [Domain] | One-time Termination Benefits [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve 0    
Restructuring - Long term [Domain] | Facility Closing [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (543)    
Restructuring - Long term [Domain] | Other Restructuring [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve 0    
Restructuring - Short term [Domain]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (294)    
Restructuring - Short term [Domain] | One-time Termination Benefits [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve 0    
Restructuring - Short term [Domain] | Facility Closing [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve (275)    
Restructuring - Short term [Domain] | Other Restructuring [Member]      
Restructuring Reserve [Roll Forward]      
Restructuring Reserve $ (19)