Derivative Financial Instruments - Gain or Loss Recognized in Financial Statements on Interest Rate Derivatives Designed as Cash Flow Hedges (Detail) - Cash Flow Hedging [Member] - Interest Rate Hedges [Member] - USD ($) $ in Thousands	7 Months Ended	12 Months Ended
	Jul. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Amount of gain (loss) recognized in accumulated other comprehensive income on interest rate derivatives (effective portion)	$ (200)	$ (72)
Amount of gain (loss) reclassified from accumulated other comprehensive income into income as interest expense (effective portion)	7	(1)
Amount of gain (loss) recognized in income on derivative (ineffective portion and amount excluded from effectiveness testing)	$ 0	$ 0