Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)
|
Sep. 30, 2016 |
Dec. 31, 2015 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
$ 13,419,359
|
$ 13,240,086
|
| Warrant Liabilities |
3,161,591
|
2,739,163
|
| Corporate Bonds [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
5,044,320
|
4,027,520
|
| Certificates of Deposit [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
2,400,979
|
6,234,996
|
| Commercial Paper [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
5,974,060
|
2,977,570
|
| Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
13,419,359
|
13,240,086
|
| Level 2 [Member] | Corporate Bonds [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
5,044,320
|
4,027,520
|
| Level 2 [Member] | Certificates of Deposit [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
2,400,979
|
6,234,996
|
| Level 2 [Member] | Commercial Paper [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Total Assets: |
5,974,060
|
2,977,570
|
| Level 3 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Warrant Liabilities |
$ 3,161,591
|
$ 2,739,163
|