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Earnings per Share - Computation of Basic and Diluted Earnings (Loss) Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Earnings Per Share [Abstract]        
Net Income(Loss), Basic $ 2,525,000 $ (1,933) $ 665,000 $ (1,920)
Net Income(Loss), Diluted $ 2,525,000 $ (1,933) $ 665,000 $ (1,920)
Weighted Average Number of Shares Outstanding, Basic 2,294,195 2,313,963 2,294,686 2,316,144
Weighted Average Number of Shares Outstanding, Options 750,205   749,909  
Weighted Average Number of Shares Outstanding, Diluted 3,044,400 2,313,963 3,044,595 2,316,144
Per Share Amount, Basic $ 1.10 $ (0.84) $ 0.29 $ (0.83)
Per Share Amount, Diluted $ 0.83 $ (0.84) $ 0.22 $ (0.83)