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Liquidity and Management's Plans (Details) (USD $)
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Dec. 31, 2012
Liquidity and management's plans [Abstract]        
Cash and cash equivalents $ 39,245,237 $ 44,077,751 $ 4,193,583 $ 6,754,485
Total current assets 66,299,641 65,388,771    
Total current liabilities $ 9,912,783 $ 9,607,867