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Note 6 - Goodwill and Other Acquired Intangible Assets, Net (Tables) | 9 Months Ended
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Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | All of our goodwill and other acquired intangible assets relate to our Services segment. The following table shows the changes in the carrying amount of goodwill for the year-to-date periods ended September 30, 2018 and December 31, 2017:
(In thousands) | Goodwill |  | Accumulated Impairment Losses |  | Net
Balance at December 31, 2016 | $ | 197,265 |  |  | $ | (2,095 | ) |  | $ | 195,170 |
Goodwill acquired | 126 |  |  | — |  |  | 126 |
Impairment losses | — |  |  | (184,374 | ) |  | (184,374 | )
Balance at December 31, 2017 | 197,391 |  |  | (186,469 | ) |  | 10,922 |
Goodwill acquired | — |  |  | — |  |  | — |
Impairment losses | — |  |  | — |  |  | — |
Balance at September 30, 2018 | $ | 197,391 |  |  | $ | (186,469 | ) |  | $ | 10,922 |
Schedule of Other Intangible Assets [Table Text Block] | The following is a summary of the gross and net carrying amounts and accumulated amortization of our other acquired intangible assets as of the periods indicated:
| September 30, 2018
(In thousands) | Original Amount Acquired |  | Accumulated Amortization and Impairment |  | Net Carrying Amount
Client relationships (1) | $ | 82,530 |  |  | $ | (46,569 | ) |  | $ | 35,961 |
Technology (2) | 15,250 |  |  | (11,567 | ) |  | 3,683 |
Trade name and trademarks | 8,340 |  |  | (3,649 | ) |  | 4,691 |
Client backlog | 6,680 |  |  | (6,680 | ) |  | — |
Non-competition agreements | 185 |  |  | (175 | ) |  | 10 |
Licenses | 463 |  |  | (23 | ) |  | 440 |
Total | $ | 113,448 |  |  | $ | (68,663 | ) |  | $ | 44,785 |
| December 31, 2017
(In thousands) | Original Amount Acquired |  | Accumulated Amortization |  | Net Carrying Amount
Client relationships (1) | $ | 82,530 |  |  | $ | (41,596 | ) |  | $ | 40,934 |
Technology (2) | 15,250 |  |  | (8,922 | ) |  | 6,328 |
Trade name and trademarks | 8,340 |  |  | (3,003 | ) |  | 5,337 |
Client backlog | 6,680 |  |  | (6,006 | ) |  | 674 |
Non-competition agreements | 185 |  |  | (168 | ) |  | 17 |
Total | $ | 112,985 |  |  | $ | (59,695 | ) |  | $ | 53,290 |
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(1) | Includes a cumulative impairment charge of $14.9 million.
(2) Includes a cumulative impairment charge of $0.9 million.
Schedule of Other Intangible Assets, Future Amortization Expense [Table Text Block] | The estimated aggregate amortization expense for the remainder of 2018 and thereafter is as follows (in thousands):
2018 | $ | 3,461 |
2019 | 8,146 |
2020 | 6,827 |
2021 | 5,413 |
2022 | 4,881 |
2023 | 4,430 |
Thereafter | 11,627 |
Total | $ | 44,785 |

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