Reconciliation of Net Operating Income to Net Income (Detail) (Predecessor, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Predecessor
Segment Reporting Information [Line Items]
Net operating income	$ 9,455	$ 9,989
Depreciation and amortization	(3,159)	(3,347)
General and administrative expenses	(717)	(834)
Interest expense	(3,915)	(4,127)
Other income	267	223
Results from discontinued operations		(21)
Net income	$ 1,931	$ 1,883