Defined Contribution 401(k) Plans (Details) - USD ($) |
6 Months Ended | |
|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Defined Contribution 401(k) Plans (Textual) | ||
| Contributions plan amount | $ 0 | $ 0 |
| Contributions to CFS plan amount | $ 48,000 | |
| Percentage of CFS compensation | 4.00% | |