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Schedule II Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II Valuation and Qualifying Accounts
Schedule II Valuation and Qualifying Accounts
 
  Additions    
Balance at
beginning of
period		Charged to
costs and
expenses		Charged to
other
accounts		DeductionsBalance at
end of
period
Year Ended December 31, 2021:       
Allowance for doubtful accounts$2,403 1,740 $— $(1,847)(1)$2,296 
Year Ended December 31, 2020:      
Allowance for doubtful accounts$5,933 $642 $— $(4,172)(1)$2,403 
Year Ended December 31, 2019:      
Allowance for doubtful accounts$1,854 $3,220 $1,090 $(231)(1)$5,933 
Notes:
 
(1)Write-offs, net of recoveries.

All other schedules are omitted because they are not applicable or the required information is shown in our financial statements or the related notes thereto.