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Note 5 - Goodwill and Other Intangible Assets - Acquired Intangible Assets by Major Class (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balances	$ 47,444	$ 57,654
Additions to/(disposals from) domain portfolio, net	(1)	(17)	$ (114)
Additions to/(disposals from) domain portfolio, net	(1)	(17)	(114)
Impairment of definite life intangible asset	0	(1,431)	0
Other		(223)
Write-down of Ting Mobile intangible assets		(2,581)
Acquisition of Network rights		72
Amortization expense	(10,007)	(11,420)	(10,333)
Amortization expense	(10,007)	(11,420)	(10,333)
Balances	50,409	47,444	57,654
Cedar Technologies Inc. [Member]
Acquisition		5,390
Acquisition		5,390
Simply Bits [Member]
Acquisition	9,160
Acquisition	9,160
Uniregistry [Member]
Acquisition	3,039
Acquisition	3,039
Customer Relationship [Member]
Acquisition	224
Acquisition	224
Brand [Member]
Acquisition	59
Acquisition	59
Technology [Member]
Acquisition	491
Acquisition	491
Brand [Member]
Balances	7,021	9,091
Other		0
Amortization expense	(2,070)	(2,070)
Amortization expense	(2,070)	(2,070)
Balances	5,010	7,021	9,091
Customer Relationships [Member]
Balances	26,664	34,269
Impairment of definite life intangible asset		(1,431)
Other		(223)
Write-down of Ting Mobile intangible assets		(2,581)
Amortization expense	(7,414)	(8,010)
Amortization expense	(7,414)	(8,010)
Balances	28,634	26,664	34,269
Customer Relationships [Member] | Cedar Technologies Inc. [Member]
Acquisition		4,640
Acquisition		4,640
Technology-Based Intangible Assets [Member]
Balances		1,516
Other		0
Amortization expense	(412)	(1,242)
Amortization expense	(412)	(1,242)
Balances	3,392		1,516
Technology-Based Intangible Assets [Member] | Uniregistry [Member]
Acquisition	3,039
Acquisition	3,039
Network Rights [Member]
Balances	1,193	469
Other		0
Acquisition of Network rights		72
Amortization expense	(111)	(98)
Amortization expense	(111)	(98)
Balances	1,082	1,193	469
Surname Domain Names [Member]
Balances	11,157	11,164
Additions to/(disposals from) domain portfolio, net	(1)	(7)
Additions to/(disposals from) domain portfolio, net	(1)	(7)
Other		0
Balances	11,156	11,157	11,164
Surname Domain Names [Member] | Simply Bits [Member]
Acquisition	9,160
Acquisition	9,160
Surname Domain Names [Member] | Customer Relationship [Member]
Acquisition	224
Acquisition	224
Surname Domain Names [Member] | Brand [Member]
Acquisition	59
Acquisition	59
Surname Domain Names [Member] | Technology [Member]
Acquisition	491
Acquisition	491
Direct Navigation Domain Names [Member]
Balances	1,135	1,145
Additions to/(disposals from) domain portfolio, net		(10)
Additions to/(disposals from) domain portfolio, net		(10)
Other		0
Balances	$ 1,135	1,135	$ 1,145
Network Rights [Member] | Cedar Technologies Inc. [Member]
Acquisition		750
Acquisition		$ 750

X

- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire network rights.

+ References

No definition available.

+ Details

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X

- 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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X

- Definition

Amount of other increases (decreases) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

+ Details

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- Definition

The amount of write down of intangible assets.

+ References

No definition available.

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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
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X

- 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
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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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X

- 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
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