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Investments (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Summary of investments    
Cost $ 18,983,662 $ 7,951,533
Gross Unrealized Gains 560 83,868
Gross Unrealized Losses (78,614) (1,400)
Fair Market Value 18,905,608 8,034,001
Mutual funds [Member]
   
Summary of investments    
Cost 18,178,518 7,500,063
Gross Unrealized Gains 0 83,868
Gross Unrealized Losses (78,614) 0
Fair Market Value 18,099,904 7,583,931
Certificates of deposit [Member]
   
Summary of investments    
Cost   250,000
Gross Unrealized Gains   0
Gross Unrealized Losses   0
Fair Market Value   250,000
Municipal bonds [Member]
   
Summary of investments    
Cost 805,144 201,470
Gross Unrealized Gains 560 0
Gross Unrealized Losses 0 (1,400)
Fair Market Value $ 805,704 $ 200,070
Maximum [Member] | Certificates of deposit [Member]
   
Summary of investments    
Contractual Maturity (less than 1 year)   1 year
Maximum [Member] | Municipal bonds [Member]
   
Summary of investments    
Contractual Maturity (less than 1 year) 1 year 1 year