Mortgage Loans On Real Estate (Schedule Of Mortgage Loans On Real Estate) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] | |||
| Face Amount of Mortgages or Maximum Available Credit | $ 41,695 | ||
| Carrying Amount of Mortgages | $ 45,242 | $ 45,734 | |
| Borrower A [Member] | Land [Member] | |||
| SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] | |||
| Interest Accrual Rate | 5.85% | ||
| Interest Payment Rate | 5.85% | ||
| Final Maturity Date | Jul. 21, 2019 | ||
| Periodic Payment Terms | P&I | ||
| Face Amount of Mortgages or Maximum Available Credit | $ 41,695 | ||
| Carrying Amount of Mortgages | $ 45,242 |