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Revenue - Schedule of Accounts Receivable and Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period $ 1,912 $ 1,701 $ 1,766 $ 1,364
Changes to receivable allowance        
Add Provision charged to expense 687 142 911 529
Recoveries (3) 7 (5) 18
Less Charges against allowance (82) (3) (158) (64)
Balance, end of period $ 2,514 $ 1,847 $ 2,514 $ 1,847