Quarterly report pursuant to Section 13 or 15(d)

Trading Securities (Schedule Of Gross Realized Gain/Loss) (Details)

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Trading Securities (Schedule Of Gross Realized Gain/Loss) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Trading Securities Schedule Of Gross Realized Gainloss Details        
Sales proceeds     $ 283,000
Gross realized (losses)    
Gross realized gains     75,000
Gain (loss) on sale of trading securities $ 1,000 $ 75,000