Quarterly report pursuant to Section 13 or 15(d)

Trading Securities (Schedule Of Change In Investment In Securities) (Details)

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Trading Securities (Schedule Of Change In Investment In Securities) (Details) - Trading Securities [Member]
9 Months Ended
Sep. 30, 2017
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Fair Value at Beginning of Year $ 59,000
Purchases
Proceeds from Sale
Gain on Sale
Unrealized Loss (37,000)
Fair Value at September 30, 2017 $ 22,000