Shareholders' Equity (Details 1) |
6 Months Ended |
|---|---|
|
Jun. 30, 2018
shares
| |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Outstanding at beginning of year | 2,360,647 |
| Restricted Stock Units (RSUs) [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Outstanding at beginning of year | 88,759 |
| Granted | 144,801 |
| Vested | (825) |
| Forfeited | (11,608) |
| Outstanding at end of year | 221,127 |