Intangible Assets Other Than Goodwill (Table) (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Acquired Finite Lived Intangible Assets [Line Items] | ||
| Acquisition cost | $ 209,984 | $ 221,554 |
| Accumulated amortization | (84,934) | (81,467) |
| Write offs | 0 | (1,150) |
| Total Intangible assets net book value | $ 125,050 | $ 138,937 |