Mortgage and Other Notes Receivable (Schedule of Financing Receivable, Allowance for Credit Loss, Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 5,210	$ 4,946
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	457
Financing Receivable, Credit Loss, Expense (Reversal)	$ (193)
Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss		$ 3,900

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of increase (decrease) in allowance for credit loss on financing receivable.

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- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

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