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Allowance for Doubtful Accounts - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Receivables [Abstract]        
Interest income $ 0.3 $ 0.4 $ 0.7 $ 1.0