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COMMITMENTS AND CONTINGENCIES - Narrative (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) bank_account | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Rent expense charged to operations |  |  |  |  |  |  |  |  | $ 1,130,000 | $ 1,120,000 | $ 1,140,000
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative expenses | $ 515,083 | $ 438,654 | $ 447,290 | $ 450,619 | $ 444,050 | $ 421,700 | $ 434,581 | $ 425,568 | 1,851,646 | 1,725,899 | 1,704,352
Interest expense | 476,837 | $ 470,250 | $ 463,160 | $ 455,337 | $ 460,189 | $ 459,852 | $ 465,991 | $ 463,950 | $ 1,865,584 | $ 1,849,982 | $ 1,805,496
Clear Media Limited |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |
Bank accounts opened by Clear Media Limited | bank_account |  |  |  |  |  |  |  |  | 3 |  |
Clear Media Limited | Net Revenue | Subsidiary Concentration Risk |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk |  |  |  |  |  |  |  |  | 4.10% |  |
Clear Media Limited | Total Assets | Subsidiary Concentration Risk |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |
Concentration risk |  |  |  |  |  |  |  |  | 3.80% |  |
Expenses recorded to correct for accounting errors | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative expenses | 9,600 |  |  |  |  |  |  |  |  |  |
Interest expense | $ 1,400 |  |  |  |  |  |  |  |  |  |

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