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Sales Agreement with MLV & Co. LLC (Details) - USD ($)
Jun. 28, 2015
Feb. 13, 2015
Oct. 01, 2014
Nov. 20, 2013
May. 20, 2013
Sales Agreement with MLV & Co. LLC          
Company may offer and sell shares of its common stock having an aggregate offering price     5,000,000   3,000,000
The Company pays to MLV a fee equal to the gross sales price         3.00%
Increase the 2014 ATM Offering by   $ 5,000,000   $ 5,000,000  
Company had sold an aggregate of shares of common stock in the ATM offering 767,463       1,257,609
Realizing net proceeds in the ATM offering $ 7,100,000       $ 7,800,000