Annual report pursuant to Section 13 and 15(d)

Fair Value of Mastheads Calculated by Discounted Cash Flow Method (Detail)

v2.4.0.8
Fair Value of Mastheads Calculated by Discounted Cash Flow Method (Detail) (Mastheads)
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount rate 9.00% 8.50% 9.50% 8.50% 8.50%
Royalty growth rate 3.00% 3.00% 2.00% 3.00% 3.00%
Minimum
          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount rate     9.00%    
Projected revenue growth ranges 1.00% 1.50% 1.20% 1.50% 1.50%
Royalty growth rate     2.00%    
Maximum
          
Fair Value Inputs, Assets, Quantitative Information [Line Items]          
Discount rate     9.50%    
Projected revenue growth ranges 2.80% 2.50% 2.50% 3.00% 2.50%
Royalty growth rate     3.00%