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SHAREHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2017
Stockholders' Equity Note [Abstract]  
Schedule of Stock Options Assumptions
The fair value of the Company’s stock options granted under the 2012 plan for the years ended December 31, 2017, 2016 and 2015 was estimated using the following assumptions:

   
2017
  
2016
  
2015
             
Expected stock price volatility
  
33.3% – 40.5%
  
37.7% – 40.3%
  
35.07% – 38.97%
Expected option life (in years)
  
4 – 5.5
  
3 – 5.5
  
3 – 4
Risk free interest rate
  
1.49% – 1.81%
  
0.92% – 1.79%
  
0.92% – 1.39%
Dividend yield
  
5%
  
5%
  
5%
Schedule of Stock Option Activity
The following table is a summary of the activity of TAT's Stock Option plan:

   
Year ended December 31,
    
Year ended December 31,
    
Year ended December 31,
  
   
2017
    
2016
    
2015
  
   
Number
of
options
    
Weighted
average
exercise
price
    
Number
of
options
    
Weighted
average
exercise
price
    
Number
of
options
    
Weighted
average
exercise
price
  
                                     
Outstanding at the beginning of the year
    
330,000
    
$
7.97
      
277,500
    
$
7.60
      
235,000
    
$
8.28
  
Granted
    
75,000
      
10.39
      
250,000
      
8.10
      
120,000
      
7.15
  
Forfeited
    
(54,375
)
    
8.35
      
(177,400
)
    
7.56
      
(77,500
)
    
8.67
  
Exercised
    
(19,583
)
    
7.3
      
(20,100
)
    
6.50
      
-
      
-
  
                                                 
Outstanding at the end of the year
    
331,042
    
$
9.03
      
330,000
    
$
7.97
      
277,500
    
$
7.60
  
                                                 
Exercisable at the end of the year
    
120,417
    
$
7.95
      
20,000
    
$
7.15
      
30,000
    
$
6.50