Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities (Narrative) (Details)

v3.4.0.3
Marketable Securities (Narrative) (Details)
Mar. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
Schedule of Available-for-sale Securities [Line Items]    
Fair value $ 14,005,173 $ 13,240,086
Unrealized losses $ 3,771 $ 18,612
11 Certificates Of Deposit With Unrealized Losses [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities in a loss position, less than one year | item 11  
Fair value $ 2,639,196  
Unrealized losses $ 804  
3 Commercial Paper With Unrealized Losses [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities in a loss position, less than one year | item 3  
Fair value $ 2,984,820  
Unrealized losses $ 2,124  
3 Corporate Bond Securities With Unrealized Losses [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities in a loss position, less than one year | item 3  
Fair value $ 3,014,440  
Unrealized losses $ 656  
1 Corporate Bond Securities With Unrealized Losses [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Securities in a loss position | item 1  
Fair value $ 1,001,890  
Unrealized losses $ 187