Fair Value Measurements (Schedule Of Asset Measured At A Fair Value On Non-recurring Basis) (Details)	Jun. 30, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate held for sale	$ 13,833,000
Nonrecurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate held for sale	4,159,000
Nonrecurring Basis [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate held for sale	$ 4,159,000

Amount classified as assets attributable to disposal group held for sale or disposed of.

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