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Concentration of Credit Risk (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Risks and Uncertainties [Abstract]
Threshold of not insured deposits by FDIC	$ 250,000
Cash and cash equivalents	15,826,515	23,626,761	20,810,018	18,042,258
Cash and cash equivalents uninsured amount	$ 15,300,000	$ 23,100,000

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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