Income Taxes - Reconciliation of Unrecognized Tax Benefits Taken or Expected to be Taken in a Tax Return That Have Been Recorded on Company's Financial Statements (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets Liabilities Net [Abstract]
Beginning Balance	$ 1,140	$ 363
Tax positions related to prior year
Decrease related to prior year		(363)
Tax positions related to current year		1,140
Ending Balance	$ 1,140	$ 1,140