Increase (decrease) in revenues.

No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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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
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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Broadcast License, Goodwill and Other Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2021
Impairment of intangible assets, finite-lived	$ 1,400,000		$ 3,800,000
Goodwill, impairment loss	0	$ 0
Impairment of long-lived assets held-for-use	$ 0	$ 0
Customer relationships [Member]
Finite-Lived Intangible Asset, Useful Life			3 years
Maximum [Member]
Increase (decrease) in revenues			21.40%	10.70%
Maximum [Member] \| Favorable lease agreements [Member]
Finite-Lived Intangible Asset, Useful Life			26 years
Maximum [Member] \| Other Intangible [Member]
Finite-Lived Intangible Asset, Useful Life			15 years
Minimum [Member]
Increase (decrease) in revenues			10.40%
Minimum [Member] \| Forecast
Increase (decrease) in revenues				7.60%
Minimum [Member] \| Favorable lease agreements [Member]
Finite-Lived Intangible Asset, Useful Life			5 years
Minimum [Member] \| Other Intangible [Member]
Finite-Lived Intangible Asset, Useful Life			1 year