Employee Benefit Plans (Table) (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Shares | ||||
| Options | ||||
| Outstanding, shares | 7,904,576 | 8,796,246 | 6,644,766 | 5,804,594 |
| Vested, shares | 1,210,824 | 730,592 | 1,643,665 | |
| Exercisable, shares | 1,210,824 | 730,592 | 1,500,476 | |
| Forfeited or expired, shares | (891,670) | (348,520) | (159,828) | |
| Granted, shares | 2,500,000 | 1,000,000 | ||
| Restricted stock and restricted stock units | ||||
| Non Vested, shares | 7,017,314 | 4,502,534 | 3,720,959 | 1,997,344 |
| Granted, shares | 4,353,975 | 2,540,000 | 2,540,000 | |
| Vested, shares | (1,839,195) | (1,755,017) | (812,847) | |
| Forfeited or expired, shares | (3,408) | (3,538) | ||
| Weighted average exercise price | ||||
| Options | ||||
| Outstanding | $ 2.98 | $ 3.2 | $ 4.09 | $ 4.57 |
| Granted | $ 1.2 | $ 1.2 | ||
| Weighted average remaining term | ||||
| Options | ||||
| Weighted average remaining term | 3 years 9 months 18 days | 4 years 4 months 28 days | 4 years 2 months 23 days | 4 years 7 months 20 days |
| Restricted stock and restricted stock units | ||||
| Weighted average remaining term | 3 years 2 months 16 days | 2 years 6 months 19 days | 2 years 5 months 13 days | 2 years |
| Aggregate fair value | ||||
| Options | ||||
| Outstanding, value | $ 7,539 | $ 9,804 | $ 8,769 | $ 8,410 |
| Forfeited or expired, value | (193) | |||
| Granted, value | 552 | |||
| Restricted stock and restricted stock units | ||||
| Non vested, value | 3,512 | 6,100 | 8,186 | $ 10,899 |
| Granted, value | 42 | 3,048 | 3,048 | |
| Vested, value | $ (2,630) | (5,122) | (5,746) | |
| Forfeited or expired, value | $ (12) | $ (15) | ||