Mortgage And Other Notes Receivable (Schedule of Financing Receivables By Allowance for Credit Loss) (Details) $ in Thousands	6 Months Ended
Jun. 30, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 5,210
Provision for expected credit losses	4
Ending balance	$ 5,214

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant