Segments - Reconciliation of Net Operating Income to Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net operating income	$ 5,999	$ 5,295
Depreciation and amortization	(8,149)	(4,908)
General and administrative expenses	(2,484)	(2,328)
Acquisition, development and other pursuit costs	(704)	(171)
Impairment charges	(35)
Interest Income	182
Interest expense	(3,791)	(3,046)
Loss on extinguishment of debt		(227)
Gain on real estate dispositions and acquisitions	26,674	6,197
Change in fair value of interest rate derivatives	(2,389)	(147)
Other (expense) income	76	15
Income tax (provision) benefit	(218)	31
Net income	26,533	8,118
Operating Segments
Net operating income	$ 17,371	$ 12,702