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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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