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Note 6 - Goodwill and Other Acquired Intangible Assets, Net (Tables) | 3 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | The following table shows the changes in the carrying amount of goodwill for the year-to-date periods ended December 31, 2019 and March 31, 2020:
(In thousands) | Goodwill |  | Accumulated Impairment Losses |  | Net
Balance at December 31, 2018 | $ | 200,561 |  |  | $ | (186,469 | ) |  | $ | 14,092 |
Goodwill acquired | 538 |  |  | — |  |  | 538 |
Impairment losses | — |  |  | (4,828 | ) |  | (4,828 | )
Balance at December 31, 2019 | 201,099 |  |  | (191,297 | ) |  | 9,802 |
Goodwill acquired | — |  |  | — |  |  | — |
Impairment losses | — |  |  | — |  |  | — |
Balance at March 31, 2020 | $ | 201,099 |  |  | $ | (191,297 | ) |  | $ | 9,802 |
Schedule of Other Intangible Assets [Table Text Block] | The following is a summary of the gross and net carrying amounts and accumulated amortization (including impairment) of our other acquired intangible assets as of the periods indicated:
| March 31, 2020
(In thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Client relationships | $ | 43,550 |  |  | $ | (28,095 | ) |  | $ | 15,455 |
Technology | 8,285 |  |  | (6,761 | ) |  | 1,524 |
Trade name and trademarks | 480 |  |  | (423 | ) |  | 57 |
Licenses | 463 |  |  | (93 | ) |  | 370 |
Total | $ | 52,778 |  |  | $ | (35,372 | ) |  | $ | 17,406 |
| December 31, 2019
(In thousands) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Client relationships | $ | 43,550 |  |  | $ | (27,269 | ) |  | $ | 16,281 |
Technology | 8,435 |  |  | (6,789 | ) |  | 1,646 |
Trade name and trademarks | 480 |  |  | (404 | ) |  | 76 |
Licenses | 463 |  |  | (81 | ) |  | 382 |
Total | $ | 52,928 |  |  | $ | (34,543 | ) |  | $ | 18,385 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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