Subsidiary Guarantors - Condensed Consolidating Balance Sheet - Additional Information (Details) - $ / shares
|
Dec. 31, 2016 |
Dec. 31, 2015 |
| Mezzanine equity |
|
|
| Series A preferred stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Series A preferred stock, shares issued |
1,840,000
|
0
|
| Series A preferred stock, shares outstanding |
1,840,000
|
0
|
| Treasury stock |
|
|
| Treasury stock, shares |
22,602
|
22,602
|
| Class A common stock |
|
|
| Common stock |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares issued |
57,048,076
|
30,573,509
|
| Common stock, shares outstanding |
57,025,474
|
30,550,907
|
| Class B common stock |
|
|
| Common stock |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares issued |
29,832,098
|
31,273,130
|
| Common stock, shares outstanding |
29,832,098
|
31,273,130
|
| JEI (Parent) |
|
|
| Treasury stock |
|
|
| Treasury stock, shares |
22,602
|
22,602
|
| JEI (Parent) | Class A common stock |
|
|
| Common stock |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares issued |
57,048,076
|
30,573,509
|
| Common stock, shares outstanding |
57,025,474
|
30,550,907
|
| JEI (Parent) | Class B common stock |
|
|
| Common stock |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares issued |
29,832,098
|
31,273,130
|
| Common stock, shares outstanding |
29,832,098
|
31,273,130
|