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10) Derivative Commitments: Schedule of Gains and Losses on Derivatives (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Details        
Gain (Loss) on Derivatives, Loan Commitments $ 94,569 $ (4,833,268) $ 537,696 $ (3,677,554)
Gain (Loss) on Derivatives, Call and put options $ 83,612 $ 27,734 $ 313,913 $ 216,561