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SHAREHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2016
SHAREHOLDERS' EQUITY [Abstract]  
Schedule of Weighted-Average Assumptions Used To Estimate the Fair Value of Options Granted
The following table presents the weighted-average assumptions used to estimate the fair value of options granted in 2016, 2015 and 2014:

  
2016
  
2015
  
2014
 
          
Expected annual dividend yield
  
0
%
  
0
%
  
0
%
Risk-free interest rate
  
1.64
%
  
1.73
%
  
2.02
%
Expected volatility
  
44.4
%
  
40.2
%
  
46.9
%
Expected life in years
  
7.1
   
6.3
   
6.2
 
Schedule of Outstanding and Exercisable Options
The following table summarizes information concerning outstanding and exercisable options:

  
Weighted Average
 
  
2016
  
2015
  
2014
 
  
Shares
  
Weighted
Avg. Exercise
Price
  
Shares
  
Weighted
Avg. Exercise
Price
  
Shares
  
Weighted
Avg. Exercise
Price
 
Outstanding at beginning of year
  
954,625
  
$
15.98
   
1,127,250
  
$
16.12
   
1,175,499
  
$
16.11
 
Granted
  
670,000
  
$
8.43
   
25,000
  
$
10.62
   
90,000
  
$
13.56
 
Exercised
  
-
  
$
-
   
(4,000
)
 
$
6.30
   
(33,749
) 
$
9.78
 
Cancelled or expired
  
(214,375
)
 
$
14.86
   
(193,625
)
 
$
16.29
   
(104,500
) 
$
15.83
 
Outstanding at end of year
  
1,410,250
  
$
12.57
   
954,625
  
$
15.98
   
1,127,250
  
$
16.12
 
                         
Options exercisable at year end
  
750,250
       
832,125
       
839,500
     
Weighted average fair value per option granted during the year
 
$
3.94
      
$
4.44
      
$
6.46
     
Schedule of Options Vested and Exercisable or Nonvested, Expected to Vest (Nonvested Outstanding Less Expected Forfeitures)
The following table summarizes information about options vested and exercisable or nonvested that are expected to vest (nonvested outstanding less expected forfeitures) at December 31, 2016:

Range of Exercise Prices
  
Number
Exercisable
  
Weighted
Average
Exercise
Price
  
Weighted Average
Remaining
Contractual Life
  
Aggregate
Intrinsic
Value (in
millions)
 
$
5.00
to
$
10.00
   
573,362
  
$
8.54
   
9.23
  
$
0.2
 
$
10.01
to
$
15.00
   
357,750
  
$
13.04
   
3.17
   
-
 
$
15.01
to
$
20.00
   
290,000
  
$
18.63
   
3.74
   
-
 
$
20.01
to
$
20.15
   
100,000
  
$
20.15
   
.05
   
-
 
$
5.00
to
$
20.15
   
1,321,112
  
$
12.85
   
5.69
  
$
0.2
 
Schedule of Unvested Stock Options
The following table reflects the activity for all unvested stock options during 2016:

  
Shares
  
Weighted
Average Grant-
Date Fair Value
 
Unvested at January 1, 2016
  
122,500
  
$
7.40
 
Granted
  
670,000
  
$
3.94
 
Vested
  
(75,000
)
 
$
8.40
 
Forfeited
  
(57,500
)
 
$
4.43
 
Unvested at December 31, 2016
  
660,000
  
$
4.02