Annual report pursuant to Section 13 and 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 ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Trading Securities Schedule Of Gross Realized Gainloss Details    
Sales proceeds $ 783,000 $ 3,061,000
Gross realized (losses) 95,000 1,460,000
Gross realized gains
Loss on sale of trading securities $ (95,000) $ (1,460,000)