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Stock-based Compensation Plans and Awards (Allocation of Stock Option Compensation Expense) (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation expense | $ 117,330 | $ 107,633 | $ 810,399 | $ 278,155 |
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Sales and Marketing [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation expense | 8,798 | 29,855 | 259,734 | 80,421 |
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Research and Development [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation expense | 36,143 | 20,909 | 126,039 | 55,990 |
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General and Administrative [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Stock-based compensation expense | $ 72,389 | $ 56,869 | $ 424,626 | $ 141,744 |