Notes Receivable (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Notes Receivable [Abstract]
Balance, beginning of period	$ 140,630	$ 134,133
Provision for loan losses	32,199	23,072
Less: Write-offs of uncollectible receivables	(25,200)	(23,719)
Balance, end of period	$ 147,629	$ 133,486