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Note 5 - Goodwill and Other Intangible Assets - Acquired Intangible Assets by Major Class (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Balances | $ 39,790 |
Acquisition of customer relationships | 166 |
Amortization expense | (2,872) | $ (2,843)
Balances | 37,084 |
Brand [Member] |  |
Balances | 2,940 |
Acquisition of customer relationships | 0 |
Amortization expense | (518) |
Balances | 2,422 |
Customer Relationships [Member] |  |
Balances | 20,813 |
Acquisition of customer relationships | 166 |
Amortization expense | (2,174) |
Balances | 18,805 |
Technology-Based Intangible Assets [Member] |  |
Balances | 2,770 |
Acquisition of customer relationships | 0 |
Amortization expense | (155) |
Balances | 2,615 |
Network Rights [Member] |  |
Balances | 983 |
Acquisition of customer relationships | 0 |
Amortization expense | (25) |
Balances | 958 |
Surname Domain Names [Member] |  |
Balances | 11,155 |
Acquisition of customer relationships | 0 |
Balances | 11,155 |
Direct Navigation Domain Names [Member] |  |
Balances | 1,129 |
Acquisition of customer relationships | 0 |
Balances | $ 1,129 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + 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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-1 + Details
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