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Reconciliation of Basic and Diluted Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income	$ 2,566	$ 3,500
(Income) loss allocated to noncontrolling interests	(26)	(88)
Net income allocable to common shares	$ 2,540	$ 3,412
Weighted-average shares outstanding—Basic	88,989,450	85,303,010
Weighted-average shares outstanding—Diluted	89,516,224	85,535,089
Earnings per share—Basic	$ 0.03	$ 0.04
Earnings per share—Diluted	$ 0.03	$ 0.04

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