Contract Balances - Valuation And Qualifying Accounts Activity (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Contract Balances
Balance at Beginning of Period	$ 44,431
Current Period Provision for Expected Credit Losses	35,709
Write-offs Charged Against Allowance	(35,042)
Balance at End of Period	$ 45,098