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Significant Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2021
Accounting Policies [Abstract]  
Schedule of accounts receivable and allowance for doubtful accounts

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Nine Months Ended September 30, 2021

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Balance at
Beginning
of Period

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Charged
to Costs
and Expenses

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Write-offs

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Balance
at End
of Period

Allowance for doubtful accounts

  

$

9,502

  

$

7,221

  

$

(593)

  

$

16,130

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