Input for calucating the fair value of assets acquired in business combination.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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No definition available.

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

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- Definition

Number of shares of stock issued during the period pursuant to acquisitions.

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BUSINESS COMBINATIONS - NARRATIVES (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
	Nov. 17, 2017	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Acquisition [Line Items]
Proceeds from sale of certain assets of WXTU-FM				$ 70,200
Purchase price in cash						$ 0	$ 15,000
Restructuring costs		$ 1,456			$ 9,494	2,591	$ 19,223
WXTU Transaction disposition [Member]
Acquisition [Line Items]
Proceeds from sale of certain assets of WXTU-FM				38,000
Gain Loss On Sale Of Business				4,400
Bonneville transaction disposal of eight radio stations [Member]
Acquisition [Line Items]
Proceeds from sale of certain assets of WXTU-FM			$ 141,000
Gain Loss On Sale Of Business			$ 400
2019 Cumulus Exchange [Member]
Acquisition [Line Items]
Loss on the exchange transaction						$ 1,800
2019 Cumulus Exchange [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member]
Acquisition [Line Items]
Business combination assets acquired measurement input						1.00%
2019 Cumulus Exchange [Member] \| Measurement Input, Discount Rate [Member]
Acquisition [Line Items]
Business combination assets acquired measurement input						9.00%
2018 Jerry Lee Transaction [Member]
Acquisition [Line Items]
Purchase price in cash				$ 57,500
2018 Jerry Lee Transaction [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member]
Acquisition [Line Items]
Business combination assets acquired measurement input						1.00%
2018 Jerry Lee Transaction [Member] \| Measurement Input, Discount Rate [Member]
Acquisition [Line Items]
Business combination assets acquired measurement input						9.00%
2018 Emmis Acquisition [Member]
Acquisition [Line Items]
Purchase price in cash					$ 15,000
2018 Emmis Acquisition [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member]
Acquisition [Line Items]
Business combination assets acquired measurement input						1.00%
2018 Emmis Acquisition [Member] \| Measurement Input, Discount Rate [Member]
Acquisition [Line Items]
Business combination assets acquired measurement input						9.00%
2017 CBS Radio Business Acquisition [Member]
Acquisition [Line Items]
Purchase price, business acquisition	$ 2,560,000
Total equity consideration	1,170,000
Assumed debt	$ 1,390,000
2017 CBS Radio Business Acquisition [Member] \| Common Class A [Member]
Acquisition [Line Items]
Shares Issued Pursuant to Acquisition	101,407,494