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Interest Rate Hedging - Financial Assets and Liabilities Valued on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative asset	$ 1,213us-gaap_DerivativeAssets
Derivative liability	(3,208)us-gaap_DerivativeLiabilities
Derivative asset and liability, Total	(1,995)
Significant Other Observable Inputs Level 2 Member
Derivatives, Fair Value [Line Items]
Derivative asset	1,213
Derivative liability	(3,208)
Derivative asset and liability, Total	$ (1,995)

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References+ Details