Earnings per Share (Details) - shares |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Weighted average common shares outstanding | ||||
| Number of incremental common shares resulting from the assumed conversion of warrants | 372,764 | 370,144 | 338,628 | 290,162 |