Annual report pursuant to Section 13 and 15(d)

Restructuring - (Narrative) (Details)

v3.10.0.1
Restructuring - (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]      
Restructuring charges $ 137 $ 160 $ 1,395
2014 Plan [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges 0 0 30
Cumulative restructuring charges 5,969    
2015 Plan [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges 137 $ 160 $ 1,365
Cumulative restructuring charges $ 2,681