Income Taxes - Schedule of Additional Information Relating to Unrecognized Tax Benefits (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Interest and penalties	$ 12,200	$ 14,799	$ 8,454
Reversal of interest and penalties	$ 7,326	$ 3,130	$ 1,785