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Summary of Significant Accounting Policies - Narrative - Intangible Assets and Warranty (Details)
12 Months Ended
Dec. 31, 2020
Minimum  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of intangible assets 7 years
Maximum  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of intangible assets 30 years