Contract Balances - Valuation And Qualifying Accounts Activity (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($)
Contract Balances
Balance at Beginning of Period	$ 38,534
Current Period Provision for Expected Credit Losses	53,141
Write-offs Charged Against Allowance	(54,966)
Balance at End of Period	$ 36,709