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Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Foreign currency transaction loss $ 2.9 $ 2.0
Research and development costs $ 3.1 $ 3.0
Maximum maturity period of highly liquid cash investments 3 months