Quarterly report pursuant to Section 13 or 15(d)

Allowance for Doubtful Accounts (Details)

v3.21.2
Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Balance, beginning of period $ 6,130 $ 7,539 $ 6,213 $ 7,384
Additions charged to expense (14) 209 273 1,158
Write-offs charged against allowance (136) (1,079) (506) (1,873)
Balance, end of period $ 5,980 $ 6,669 $ 5,980 $ 6,669