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Note 5 - Goodwill and Other Intangible Assets - Acquired Intangible Assets by Major Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Balances | $ 27,899 |  | $ 29,484 |
Acquisition of customer relationships | 2 |  | 98 |
Additions to/(disposals from) domain portfolio, net | 0 |  | (2) |
Amortization expense | (1,201) | $ (2,609) | (2,880) | $ (5,481)
Balances | 26,700 |  | 26,700 |
Brand [Member] |  |  |  |
Balances | 648 |  | 870 |
Acquisition of customer relationships | 0 |  | 0 |
Additions to/(disposals from) domain portfolio, net | 0 |  | 0 |
Amortization expense | (75) |  | (297) |
Balances | 573 |  | 573 |
Customer Relationships [Member] |  |  |  |
Balances | 12,122 |  | 13,303 |
Acquisition of customer relationships | 2 |  | 98 |
Additions to/(disposals from) domain portfolio, net | 0 |  | 0 |
Amortization expense | (946) |  | (2,223) |
Balances | 11,178 |  | 11,178 |
Technology-Based Intangible Assets [Member] |  |  |  |
Balances | 1,993 |  | 2,148 |
Acquisition of customer relationships | 0 |  | 0 |
Additions to/(disposals from) domain portfolio, net | 0 |  | 0 |
Amortization expense | (155) |  | (310) |
Balances | 1,838 |  | 1,838 |
Network Rights [Member] |  |  |  |
Balances | 859 |  | 884 |
Acquisition of customer relationships | 0 |  | 0 |
Additions to/(disposals from) domain portfolio, net | 0 |  | 0 |
Amortization expense | (25) |  | (50) |
Balances | 834 |  | 834 |
Surname Domain Names [Member] |  |  |  |
Balances | 11,149 |  | 11,151 |
Acquisition of customer relationships | 0 |  | 0 |
Additions to/(disposals from) domain portfolio, net | 0 |  | (2) |
Amortization expense | 0 |  | 0 |
Balances | 11,149 |  | 11,149 |
Direct Navigation Domain Names [Member] |  |  |  |
Balances | 1,128 |  | 1,128 |
Acquisition of customer relationships | 0 |  | 0 |
Additions to/(disposals from) domain portfolio, net | 0 |  | 0 |
Amortization expense | 0 |  | 0 |
Balances | $ 1,128 |  | $ 1,128 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482686/350-30-45-2 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482686/350-30-45-1 + Details
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