Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Foreign Currency (Details)

v3.20.4
Summary of Significant Accounting Policies - Foreign Currency (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract]        
Cumulative translation adjustments included in AOCI $ (41,651) $ (45,484) $ (54,677) $ (39,190)