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Computation of Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2018
Computation of Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share
Basic and diluted earnings per share are calculated as follows:

  
For the Six Months
Ended June 30,
  
For the Three Months
Ended June 30,
 
  
2018
  
2017
  
2018
  
2017
 
Net income/(loss)
 
$
236,200
  
$
997,200
  
$
(81,100
)
 
$
355,700
 
Weighted average shares outstanding for the period
  
1,416,699
   
1,482,997
   
1,416,699
   
1,416,699
 
Basic earnings/(loss) per share
 
$
0.17
  
$
0.67
  
$
(0.06
)
 
$
0.25
 
Diluted earnings/(loss) per share
 
$
0.17
  
$
0.67
  
$
(0.06
)
 
$
0.25