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Note 7 - Goodwill and Other Acquired Intangible Assets, Net - Schedule of Acquired Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Net | $ 13,241 |
Real Estate Segment |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 52,778 | $ 52,928
Finite-Lived Intangible Assets, Accumulated Amortization | (39,537) | (34,543)
Finite-Lived Intangible Assets, Net | 13,241 | 18,385
Real Estate Segment | Client relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 43,550 | 43,550
Finite-Lived Intangible Assets, Accumulated Amortization | (31,559) | (27,269)
Finite-Lived Intangible Assets, Net | 11,991 | 16,281
Real Estate Segment | Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 8,285 | 8,435
Finite-Lived Intangible Assets, Accumulated Amortization | (7,370) | (6,789)
Finite-Lived Intangible Assets, Net | 915 | 1,646
Real Estate Segment | Licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 463 | 463
Finite-Lived Intangible Assets, Accumulated Amortization | (128) | (81)
Finite-Lived Intangible Assets, Net | 335 | 382
Real Estate Segment | Trade names and trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 480 | 480
Finite-Lived Intangible Assets, Accumulated Amortization | (480) | (404)
Finite-Lived Intangible Assets, Net | $ 0 | $ 76

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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