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Accounts Receivable and Unbilled Accounts Receivable (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Gross accounts receivable | $ 6,207,066 | $ 7,642,438
Less: allowances for doubtful accounts | (29,794) | (30,038)
Accounts receivable, net | 6,177,272 | 7,612,400
Commercial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Gross accounts receivable | 3,421,872 | 2,782,179
Government [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Gross accounts receivable | $ 2,785,194 | $ 4,860,259

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