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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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Balances	$ 52,732		$ 57,654
Amortization expense	(2,645)	$ (2,858)	(8,776)	$ (7,463)
Balances	50,087		50,087
Cedar Networks acquisition (Note 4 (b))			5,390
Additions to/(disposals from) domain portfolio, net	0	(66)	(15)	(72)
Impairment of definite life intangible asset	0	$ 0	(1,431)	$ 0
Other			(223)
Write-down of Ting Mobile customer relationships			(2,581)
Acquisition of Network rights			69
Brand [Member]
Balances	8,056		9,091
Amortization expense	(518)		(1,553)
Balances	7,538		7,538
Cedar Networks acquisition (Note 4 (b))			0
Additions to/(disposals from) domain portfolio, net			0
Impairment of definite life intangible asset			0
Other			0
Write-down of Ting Mobile customer relationships			0
Acquisition of Network rights			0
Customer Relationships [Member]
Balances	30,257		34,268
Amortization expense	(1,797)		(6,213)
Balances	28,460		28,460
Cedar Networks acquisition (Note 4 (b))			4,640
Additions to/(disposals from) domain portfolio, net			0
Impairment of definite life intangible asset			(1,431)
Other			(223)
Write-down of Ting Mobile customer relationships			(2,581)
Acquisition of Network rights			0
Technology-Based Intangible Assets [Member]
Balances	884		1,516
Amortization expense	(305)		(937)
Balances	579		579
Cedar Networks acquisition (Note 4 (b))			0
Additions to/(disposals from) domain portfolio, net			0
Impairment of definite life intangible asset			0
Other			0
Write-down of Ting Mobile customer relationships			0
Acquisition of Network rights			0
Network Rights [Member]
Balances	1,240		469
Amortization expense	(25)		(73)
Balances	1,215		1,215
Cedar Networks acquisition (Note 4 (b))			750
Additions to/(disposals from) domain portfolio, net			0
Impairment of definite life intangible asset			0
Other			0
Write-down of Ting Mobile customer relationships			0
Acquisition of Network rights			69
Surname Domain Names [Member]
Balances	11,160		11,166
Amortization expense	0		0
Balances	11,160		11,160
Cedar Networks acquisition (Note 4 (b))			0
Additions to/(disposals from) domain portfolio, net			(6)
Impairment of definite life intangible asset			0
Other			0
Write-down of Ting Mobile customer relationships			0
Acquisition of Network rights			0
Direct Navigation Domain Names [Member]
Balances	1,135		1,144
Amortization expense	0		0
Balances	$ 1,135		1,135
Cedar Networks acquisition (Note 4 (b))			0
Additions to/(disposals from) domain portfolio, net			(9)
Impairment of definite life intangible asset			0
Other			0
Write-down of Ting Mobile customer relationships			0
Acquisition of Network rights			$ 0

X

- Definition

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

+ References

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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.

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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.

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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
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-Section 50
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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
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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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