Annual report pursuant to Section 13 and 15(d)

IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details 3)

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IMPAIRMENT OF GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Details 3) - Mastheads [Member]
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Risk-adjusted discount rate 10.00% 9.50% 8.00%
Royalty rate 3.00% 3.00% 3.00%
Maximum [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Projected revenue growth ranges 0.90% 1.20% 2.90%
Minimum [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Projected revenue growth ranges (3.20%) (4.30%) 2.10%