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Stock-Based Compensation (Summary of Unvested Stock Options) (Details) - USD ($) | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
Shares |  |
Unvested, beginning of period (in shares) | 20,865 |
Vested (in shares) | (10,432) |
Unvested, end of period (in shares) | 10,433 |
Weighted Average Grant Date Fair Value Per Share |  |
Unvested, weighted average grant date fair value, beginning of period (in USD per share) | $ 11.93 |
Vested, weighted average grant date fair value (in USD per share) | 11.93 |
Unvested, weighted average grant date fair value, end of period (in USD per share) | $ 11.93 |
Stock Options |  |
Weighted Average Grant Date Fair Value Per Share |  |
Unrecognized compensation cost related to unvested options | $ 75,243 |
Unrecognized compensation cost related to awards, weighted average period for recognition | 1 year |
Share-based compensation expense | $ 60,669 | $ 97,140

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