Quarterly report pursuant to Section 13 or 15(d)

Restructuring Activity (Details 2)

v3.8.0.1
Restructuring Activity (Details 2) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve $ 2,175 $ 3,039
Payments for Restructuring (742)  
Restructuring Reserve, Settled without Cash (122)  
Lease Related Impairment [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve 2,096 2,693
Payments for Restructuring (570)  
Restructuring Reserve, Settled without Cash (27)  
One-time Termination Benefits [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve 42 239
Payments for Restructuring (172)  
Restructuring Reserve, Settled without Cash (25)  
Other Restructuring [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve 37 $ 107
Payments for Restructuring 0  
Restructuring Reserve, Settled without Cash $ (70)