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Significant Accounting Policies - Accounting Pronouncements (Details)
 9 Months Ended
Sep. 30, 2021
Accounting Standards Update 2019-12  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Change in Accounting Principle, Accounting Standards Update, Adopted true
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2021
Accounting Standards Update 2016-02  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Change in Accounting Principle, Accounting Standards Update, Adopted true
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2020
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected us-gaap:AccountingStandardsUpdate201602CumulativeEffectPeriodOfAdoptionMember
Accounting Standards Update 2016-13  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Change in Accounting Principle, Accounting Standards Update, Adopted true
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2020
Accounting Standards Update 2018-15  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Change in Accounting Principle, Accounting Standards Update, Adopted true
Change in Accounting Principle, Accounting Standards Update, Adoption Date Jan. 01, 2020