Fair Value Measurements - Assets Measures at Fair Value on a Recurring Basis by Level within Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest Rate Swap Asset	$ 5,594	$ 0
Interest Rate Swap Liability	(2,045)	(3,144)
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest Rate Swap Asset	5,594	0
Interest Rate Swap Liability	$ (2,045)	$ (3,144)