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Intangible Asset and Goodwill (Details 2) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Goodwill |  |
Gross Carrying Amount | $ 230,450 |
Accumulated Impairment Losses | (21,770) |
Net Carrying Amount | 208,680 | $ 209,661
MID Segment |  |
Goodwill |  |
Gross Carrying Amount | 66,643 |
Accumulated Impairment Losses | 0 |
Net Carrying Amount | 66,643 | 66,643
RSD Segment |  |
Goodwill |  |
Gross Carrying Amount | 142,037 |
Accumulated Impairment Losses | 0 |
Net Carrying Amount | 142,037 | $ 143,018
Other |  |
Goodwill |  |
Gross Carrying Amount | 21,770 |
Accumulated Impairment Losses | (21,770) |
Net Carrying Amount | $ 0 |

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