Variable Interest Entities (Information Related To The Assets And Liabilities Of The VIEs) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Restricted cash	$ 34,090	$ 49,637
Securitized notes receivable, net	429,993	448,568
Receivable backed notes payable - non-recourse	339,224	334,246
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Restricted cash	17,456	22,534
Securitized notes receivable, net	288,435	292,590
Receivable backed notes payable - non-recourse	$ 339,224	$ 334,246