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Reconciliation of Basic and Diluted Earnings (Loss) Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Reconciliation Of Earning Per Share Statement [Line Items]        
Net Income (loss) $ 353 $ (128) $ 112 $ 2,807
(Income) loss allocated to non-controlling interests (16)   (8)  
Net Income (loss) allocable to common shares $ 337 $ (128) $ 104 $ 2,807
Weighted-average shares outstanding-Basic 31,794,822 17,707,287 31,781,718 16,459,623
Weighted-average shares outstanding-Diluted 33,066,770 17,707,287 33,060,578 16,484,357
Earnings (loss) per share-Basic $ 0.01 $ (0.01) $ 0.00 $ 0.17
Earnings (loss) per share-Diluted $ 0.01 $ (0.01) $ 0.00 $ 0.17