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Deferred Finance Costs (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]    
Gross amount $ 25,531 $ 21,881
Accumulated amortization (7,880) (5,238)
Net $ 17,651 $ 16,643