Segments - Reconciliation of Net Operating Income to Net Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Net operating income	$ 11,123	$ 9,455
Depreciation and amortization	(3,969)	(3,159)
General and administrative expenses	(2,046)	(717)
Interest expense	(2,565)	(3,915)
Other income	112	267
Income tax provision	(149)
Net income	$ 2,506	$ 1,931