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Shares Issued through Equity Offering Program (Details) (USD $)
 0 Months Ended 9 Months Ended
Mar. 20, 2014
Sep. 30, 2014
Shares Issued through Equity Offering Program    
Maximum aggregate sales price of shares to be sold under an Equity Offering Sales Agreement (in dollars) $ 38,360,000  
Shares issued through equity offering program    
Number of shares sold   179,051
Proceeds from sale of shares, net of commission and before offering costs   3,889,700
Payment of commissions on sale of shares   39,000
Payment of offering costs, primarily professional fees, on sale of shares   $ 114,500