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Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Other Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Liability Derivatives $ 13,132 $ 9,344
Other Liabilities [Member] | Interest Rate Swaps [Member]    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 13,132 9,344
Other Assets [Member]    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 13,132 9,344
Other Assets [Member] | Interest Rate Swaps [Member]    
Derivatives, Fair Value [Line Items]    
Asset Derivatives $ 13,132 $ 9,344