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Note 7 - Goodwill and Other Acquired Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 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 as of and for the years ended December 31, 2020 and 2019.
(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 disposed (1) |  | (191,297) |  |  | 191,297 |  |  | — |
Balance at December 31, 2020 |  | $ | 9,802 |  |  | $ | — |  |  | $ | 9,802 |
(1)Related to the sale of Clayton in January 2020.
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [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.
|  | December 31, 2020 |  | December 31, 2019
(In thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Client relationships |  | $ | 43,550 |  |  | $ | (31,559) |  |  | $ | 11,991 |  |  | $ | 43,550 |  |  | $ | (27,269) |  |  | $ | 16,281 |
Technology |  | 8,285 |  |  | (7,370) |  |  | 915 |  |  | 8,435 |  |  | (6,789) |  |  | 1,646 |
Licenses |  | 463 |  |  | (128) |  |  | 335 |  |  | 463 |  |  | (81) |  |  | 382 |
Trade names and trademarks |  | 480 |  |  | (480) |  |  | — |  |  | 480 |  |  | (404) |  |  | 76 |
Total |  | $ | 52,778 |  |  | $ | (39,537) |  |  | $ | 13,241 |  |  | $ | 52,928 |  |  | $ | (34,543) |  |  | $ | 18,385 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] | For the years ended December 31, 2020, 2019 and 2018, amortization expense (including impairment) was $5.1 million, $8.6 million and $12.4 million, respectively. The estimated amortization expense for 2021 and thereafter is as follows.
(In thousands) |  | Estimated Amortization Expense
2021 |  | $ | 3,450 |
2022 |  | 3,397 |
2023 |  | 3,361 |
2024 |  | 3,033 |
Thereafter |  | — |
Total |  | $ | 13,241 |

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: 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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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + 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 + Details
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