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v3.21.2

Summary of Significant Accounting Policies - Accounts Receivable and Doubtful Accounts (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2021 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |
Beginning Balance | $ 20,350
Increases (decreases) to Costs and Expenses | (4,149)
Write-Offs Net of Recoveries | (2,100)
Ending Balance | 14,101
Prepaid Expense and Other Current Assets, Allowance for Credit Loss [Roll Forward] |
Beginning Balance | 7,029
Increases (decreases) to Costs and Expenses | 0
Write-Offs Net of Recoveries | 0
Ending Balance | $ 7,029

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- Definition Amount of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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