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Earnings Per Share - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Income Loss From Discontinued Operations Net Of Tax [Abstract]        
Income $ (462) $ (8,679) $ 221 $ (5,227)