Accounts Receivable (Allowance) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at January 1	$ 5,674
Write-offs	(1,952)
Recoveries	821
Increase in allowance	2,612
Balance at June 30	$ 7,155