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Note 6 - Goodwill and Other Intangible Assets - Acquired Intangible Assets by Major Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Balances | $ 44,838 |  | $ 50,409 |
Acquisition of customer relationships | 0 |  | 117 |
Amortization expense | (2,842) | $ (2,288) | (8,528) | $ (7,253)
Balances | 41,996 |  | 41,996 |
Additions to/(disposals from) domain portfolio, net | 0 | $ 0 | (2) | $ (1)
Brand [Member] |  |  |  |
Balances | 3,974 |  | 5,010 |
Acquisition of customer relationships | 0 |  | 0 |
Amortization expense | (518) |  | (1,554) |
Balances | 3,456 |  | 3,456 |
Customer Relationships [Member] |  |  |  |
Balances | 24,461 |  | 28,634 |
Acquisition of customer relationships | 0 |  | 117 |
Amortization expense | (2,143) |  | (6,433) |
Balances | 22,318 |  | 22,318 |
Technology-Based Intangible Assets [Member] |  |  |  |
Balances | 3,082 |  | 3,392 |
Acquisition of customer relationships | 0 |  | 0 |
Amortization expense | (156) |  | (466) |
Balances | 2,926 |  | 2,926 |
Network Rights [Member] |  |  |  |
Balances | 1,032 |  | 1,082 |
Acquisition of customer relationships | 0 |  | 0 |
Amortization expense | (25) |  | (75) |
Balances | 1,007 |  | 1,007 |
Surname Domain Names [Member] |  |  |  |
Balances | 11,156 |  | 11,156 |
Acquisition of customer relationships | 0 |  | 0 |
Balances | 11,156 |  | 11,156 |
Direct Navigation Domain Names [Member] |  |  |  |
Balances | 1,133 |  | 1,135 |
Acquisition of customer relationships | 0 |  | 0 |
Balances | $ 1,133 |  | 1,133 |
Additions to/(disposals from) domain portfolio, net |  |  | $ (2) |

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- Definition Aggregate amount of indefinite life intangible assets recognized as cost of revenues, as a result of the disposal of these domain names, during the period. + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 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)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI https://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 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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