Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Schedule of Short-Term Investments) (Details)

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Summary of Significant Accounting Policies (Schedule of Short-Term Investments) (Details) - USD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost $ 750,000 $ 5,198,878
Gross unrealized gains $ 975 810,116
Gross unrealized losses (6,572)
Estimated fair value $ 750,975 6,002,422
Certificates of deposit [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost 750,000 1,099,775
Gross unrealized gains $ 975 $ 1,168
Gross unrealized losses
Estimated fair value $ 750,975 $ 1,100,943
Municipal bonds [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost   $ 536,046
Gross unrealized gains  
Gross unrealized losses   $ (6,572)
Estimated fair value   529,474
Corporate fixed income bonds [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized cost   3,563,057
Gross unrealized gains   $ 808,948
Gross unrealized losses  
Estimated fair value   $ 4,372,005