v3.8.0.1

NET INCOME PER COMMON SHARE (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] |
Schedule of Earnings Per Share Reconciliation [Table Text Block] |
|  |  |  | Three Months Ended
|  |  |  | March 31,
|  |  |  | 2018 |  | 2017
|  |  |  | (amounts in thousands except per share data)
Basic Income (Loss) Per Share |  |  |  |  |  |
| Numerator |  |  |  |  |  |
|  | Net income available to the Company - continuing operations |  | $ | (14,206) |  | $ | (9,331)
|  | Preferred stock dividends |  |  | - |  |  | 550
|  | Net income available to common shareholders from |  |  |  |  |  |
|  | continuing operations |  |  | (14,206) |  |  | (9,881)
|  | Income (loss) from discontinued operations, net of tax |  |  | 328 |  |  | -
|  | Net income (loss) available to common shareholders |  | $ | (13,878) |  | $ | (9,881)
| Denominator |  |  |  |  |  |
|  | Basic weighted average shares outstanding |  |  | 138,939 |  |  | 38,910
|  | Net Income (Loss) Per Common Share - Basic: |  |  |  |  |  |
|  | Net income (loss) from continuing operations per share available to common shareholders - Basic |  | $ | (0.10) |  | $ | (0.25)
|  | Net income (loss) from discontinued operations per share available to common shareholders - Basic |  |  | - |  |  | -
|  | Net income (loss) per share available |  |  |  |  |  |
|  | to common shareholders - Basic |  | $ | (0.10) |  | $ | (0.25)
Diluted Income (Loss) Per Share |  |  |  |  |  |
| Numerator |  |  |  |  |  |
|  | Net income (loss) available to the Company |  | $ | (14,206) |  | $ | (9,331)
|  | Preferred stock dividends |  |  | - |  |  | 550
|  | Net income available to common shareholders from |  |  |  |  |  |
|  | continuing operations |  |  | (14,206) |  |  | (9,881)
|  | Income (loss) from discontinued operations, net of tax |  |  | 328 |  |  | -
|  | Net income (loss) available to common shareholders |  | $ | (13,878) |  | $ | (9,881)
| Denominator |  |  |  |  |  |
|  | Basic weighted average shares outstanding |  |  | 138,939 |  |  | 38,910
|  | Effect of RSUs and options under the treasury stock |  |  |  |  |  |
|  | method |  |  | - |  |  | -
|  | Diluted weighted average shares outstanding |  |  | 138,939 |  |  | 38,910
|  | Net Income (Loss) Per Common Share - Diluted: |  |  |  |  |  |
|  | Net income (loss) from continuing operations per share available to common shareholders - Diluted |  | $ | (0.10) |  | $ | (0.25)
|  | Net income (loss) from discontinued operations per share available to common shareholders - Diluted |  |  | - |  |  | -
|  | Net income (loss) per share available |  |  |  |  |  |
|  | to common shareholders - Diluted |  | $ | (0.10) |  | $ | (0.25)
Equity Award Impact Schedule |
|  |  | Three Months Ended
|  |  | March 31,
Impact Of Equity Issuances |  | 2018 |  | 2017
|  |  | (amounts in thousands, except per share data)
Shares excluded as anti-dilutive under the treasury stock method: |  |  |  |  |  |
| Options |  |  | 367 |  |  | -
| Price range of options: from |  | $ | 9.66 |  | $ | -
| Price range of options: to |  | $ | 13.98 |  | $ | -
RSUs excluded with service and market conditions as |  |  |  |  |  |
market conditions not met |  |  | 226 |  |  | 267
Perpetual cumulative convertible preferred stock treated as |  |  |  |  |  |
anti-dilutive under the as if method |  |  | - |  |  | 1,953
Excluded shares as anti-dilutive when reporting a net loss |  |  | 1,313 |  |  | 1,164

X
- Definition Tabular format of incremental anti dilutive shares excluded. + References No definition available. + Details
Name: | etm_EquityAwardImpactScheduleTableTextBlock
Namespace Prefix: | etm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration