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Business Overview and Summary of Significant Accounting Policies - Adjustment of Prior Financial Statements for Immaterial Items (Details)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Aug. 03, 2018
facility
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
item
Adjustment of Prior Period Financial Statements for Immaterial Items            
Selling, general and administrative   $ 19,469 $ 15,617 $ 55,363 $ 48,893  
Cost of goods and services sold   $ 2,056 $ 2,472 $ 6,736 7,938  
Number of facilities | facility 3          
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         (293)  
Cost of goods and services sold         $ 124