Amortization Expense for Capitalized Produced Media Content and Acquired Media Rights (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amortization Expense [Line Items]
Total media amortization expense	$ 2,071	$ 1,021	$ 1,341