Schedule I - Parent Company Only Financial Statements - Commitments, Contingencies and Guarantees - Additional Information (Detail) (Parent Company [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Secured Loan Arrangements [Member]	Sep. 25, 2009 Secured Loan Arrangements [Member]
Commitments Contingencies And Guarantees [Line Items]
Stated interest rate				8.09%
Outstanding balance of the secured loan	$ 1.6	$ 26.4
Prepayment of secured loan			$ 26.7