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Summary of Significant Accounting Policies - Adjustment of Prior Financial Statements for Immaterial Items (Details)
$ in Thousands
12 Months Ended 36 Months Ended
Dec. 31, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Adjustment of Prior Period Financial Statements for Immaterial Items      
Selling, general and administrative $ 65,791 $ 66,328  
Cost of goods and services sold $ 10,701 11,220  
Revision of 2017 Through 2020 Immaterial Errors      
Adjustment of Prior Period Financial Statements for Immaterial Items      
Number of immaterial items corrected | item 2    
Revision of 2017 Through 2020 Immaterial Errors | Revision of Prior Period Error Correction Adjustment      
Adjustment of Prior Period Financial Statements for Immaterial Items      
Selling, general and administrative $ 926 584 $ 1,907
Cost of goods and services sold   $ 249 $ 476