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Significant Accounting Policies - Other Intangible Assets (Details)
12 Months Ended
Dec. 31, 2020
Minimum  
Finite-Lived Intangible Assets [Line Items]  
Capitalized intangible assets, useful life 2 years
Maximum  
Finite-Lived Intangible Assets [Line Items]  
Capitalized intangible assets, useful life 10 years