Fair Value Measurement - Additional Information (Details) - USD ($) $ in Millions	Jan. 06, 2016	Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Discount rate		10.50%
Subsequent Event | Travel Channel [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Ownership interest (in hundredths)	35.00%
Fair value of residual interest acquired	$ 99.0