Hedge Accounting (Schedule Of Derivative Instruments On The Balance Sheet At Fair Value) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative financial instruments - current portion	$ 109,000	$ 41,000
Derivative financial instruments - non-current portion	233,000	145,000
Total derivatives	342,000	186,000
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative financial instruments - non-current portion	233,000	145,000
Total derivatives designated as hedging instruments	342,000	186,000
Total derivatives	342,000	186,000
Interest Rate Contract [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative financial instruments - current portion	$ 109,000	$ 41,000

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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