Annual report pursuant to Section 13 and 15(d)

Restructuring - (Narrative) (Details)

v3.20.4
Restructuring - (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   $ 13 $ 137
2015 Plan [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring charges   $ 13 $ 137
Cumulative restructuring charges $ 2,694