Credit Losses (Allowance for Credit Losses) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance of allowance for credit losses at January 1, 2021	$ 15,419
Current period provision for expected losses	8,667
Write-offs charged against allowance	(3,460)
Recoveries of any amounts previously written off	111
Balance of allowance for credit losses at December 31, 2021	$ 20,737