Income Taxes - Balance Sheet Presentation of the Company's Deferred Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current deferred tax assets	$ 4,412	$ 3,187
Current deferred tax liabilities	(574)	(291)
Net current deferred tax assets	3,838	2,896
Non-current deferred tax assets	100,279	100,200
Non-current deferred tax liabilities	(236)	(188)
Net non-current deferred tax assets	100,043	100,012
Net deferred tax assets	$ 103,881	$ 102,908