Derivatives - Fair Value Measurements on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014
Fair Value On Recurring Basis [Line Items]
Fair Value of Swaps	$ (1,604)
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value On Recurring Basis [Line Items]
Fair Value of Swaps	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value On Recurring Basis [Line Items]
Fair Value of Swaps	(1,604)
Fair Value, Measurements, Recurring | Unobservable Inputs (Level 3)
Fair Value On Recurring Basis [Line Items]
Fair Value of Swaps	$ 0