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Investment Securities - Gross Unrealized Losses and Fair Value Aggregated by Investment Category and Length of Time in Continuous Unrealized Loss Position (Details 1)
Dec. 31, 2016
USD ($)
Schedule of Available-for-sale Securities [Line Items]  
Less than 12 months, Fair Value $ 62,293,963
Less than 12 months, Unrealized Loss 1,155,189
12 months or more, Fair Value 10,588,751
12 months or more, Unrealized Loss 292,755
Total, Fair Value 72,882,714
Total, unrealized loss 1,447,944
U.S. Treasury  
Schedule of Available-for-sale Securities [Line Items]  
Less than 12 months, Fair Value
Less than 12 months, Unrealized Loss
12 months or more, Fair Value
12 months or more, Unrealized Loss
Total, Fair Value
Total, unrealized loss
State and Municipal  
Schedule of Available-for-sale Securities [Line Items]  
Less than 12 months, Fair Value 19,199,670
Less than 12 months, Unrealized Loss 579,863
Total, Fair Value 19,199,670
Total, unrealized loss 579,863
Mortgaged-backed  
Schedule of Available-for-sale Securities [Line Items]  
Less than 12 months, Fair Value 43,094,293
Less than 12 months, Unrealized Loss 575,326
12 months or more, Fair Value 10,588,751
12 months or more, Unrealized Loss 292,755
Total, Fair Value 53,683,044
Total, unrealized loss $ 868,081