Annual report pursuant to Section 13 and 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Goodwill (Details)

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Basis of Presentation and Summary of Significant Accounting Policies - Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Basis of Presentation and Summary of Significant Accounting Policies      
Impairment of goodwill $ 0 $ 0 $ 0