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3) Loans Held For Sale: Schedule of Mortgage Fee Income for Loans Held for Sale (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Interest and Other Income $ 7,089,025 $ 8,004,952
Net change in fair value of loans held for sale 4,180,777  
Mortgage fee income 153,797,171 189,146,639
LoansHeldForSaleMember    
Loan fees 40,434,686 44,341,501
Secondary gains 108,756,613 140,651,103
Net change in fair value of loan commitments (4,812,743) (862,163)
Net change in fair value of loans held for sale 4,180,777  
Provision for loan loss reserve (1,851,187) (2,988,754)
Mortgage fee income $ 153,797,171 $ 189,146,639