Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 15,161	$ 9,344
Other Liabilities [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	15,161	9,344
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	15,161	9,344
Other Assets [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 15,161	$ 9,344