Annual report pursuant to Section 13 and 15(d)

FINANCIAL INSTRUMENTS AND INVESTMENTS - Maturities for Bonds (Details)

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FINANCIAL INSTRUMENTS AND INVESTMENTS - Maturities for Bonds (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Investments, Fair Value $ 13,716,751 $ 13,410,792
Level 2    
Investments, Fair Value 11,231,252 $ 10,973,907
Bonds | Level 2    
Investments, Fair Value 7,222,814  
Bonds | Level 2 | Less Than One Year    
Investments, Fair Value 302,189  
Bonds | Level 2 | 1-2 years    
Investments, Fair Value 1,685,858  
Bonds | Level 2 | 2-5 years    
Investments, Fair Value 4,983,823  
Bonds | Level 2 | 5-10 years    
Investments, Fair Value 250,944  
Bonds | Level 2 | Over 10 years    
Investments, Fair Value $ 0