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Net Income Per Share - Additional Information (Detail) - $ / shares
6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
May 01, 2013
Apr. 30, 2013
Schedule Of Earnings Per Share [Line Items]        
Common stock, shares outstanding 45,808,256 45,555,400    
Par value of common stock issued $ 0.01 $ 0.01   $ 0.01
Exercise price of common stock     $ 16.67  
Warrants outstanding 4,877,749      
Common Stock [Member]        
Schedule Of Earnings Per Share [Line Items]        
Number of new common stock issued 252,856