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SHAREHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2019
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, 2019, 2018 and 2017 was estimated using the following assumptions:

   
2019
  
2018
  
2017
             
Expected stock price volatility
  
34.2% – 36.8%
  
32.6% – 40.8%
  
33.3% – 40.5%
Expected option life (in years)
  
3.5-5
  
3.5-5.5
  
4 – 5.5
Risk free interest rate
  
1.44% – 1.63%
  
1.71% – 2.87%
  
1.49% – 1.81%
Dividend yield
  
0%
  
0% - 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,
  
   
2019
    
2018
    
2017
  
   
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
    
548,267
    
$
9.03
      
365,000
    
$
8.53
      
330,000
    
$
7.97
  
Granted
    
170,000
      
5.44
      
273,893
      
9.70
      
75,000
      
10.39
  
Forfeited
    
(126,808
)
    
11.19
      
(63,958
)
    
9.85
      
(20,417
)
    
7.47
  
Exercised
    
-
      
-
      
(26,668
)
    
7.15
      
(19,583
)
    
7.3
  
                                                 
Outstanding at the end of the year
    
591,459
      
7.53
      
548,267
    
$
9.03
      
365,000
    
$
8.53
  
                                                 
Exercisable at the end of the year
    
264,389
    
$
7.74
      
163,438
    
$
8.34
      
120,417
    
$
7.95