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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 | |
|---|---|---|
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Mar. 31, 2014
|
Mar. 31, 2013
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Stock-based compensation expense | $ 366,640 | $ 86,155 |
|
General and Administrative [Member]
|
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Stock-based compensation expense | 178,171 | 41,814 |
|
Research and Development [Member]
|
||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Stock-based compensation expense | 87,947 | 19,655 |
|
Sales and Marketing [Member]
|
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Stock-based compensation expense | $ 100,522 | $ 24,686 |