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Stock-Based Compensation (Tables)
3 Months Ended
Jun. 30, 2017
Stock-Based Compensation [Abstract]  
Fair market value of stock-based compensation awards
The fair value of stock-based compensation awards granted during the three months ended June 30, 2017 and 2016 were as follows:

    
Three months ended June 30,
   
2017
    
2016
Shares
  
Fair Value
Per Award
Shares
  
Fair Value
Per Award
Stock options
  
0.2
  
$
7.30
   
0.3
  
$
4.60
 
Restricted stock awards
  
0.2
  
$
15.90
   
0.3
  
$
10.00
 
Performance stock awards
  
0.2
  
$
15.90
   
0.3
  
$
10.00
 
Assumptions used in determining fair value of options
The Company used the following assumptions in determining fair value for stock options:

   
Three months ended June 30,
  
2017
  
2016
Expected life of awards in years
  
6.4
   
6.4
 
Risk-free interest rate
  
1.9
%
  
1.4
%
Expected volatility of the Company's stock
  
44.3
%
  
45.5
%
Expected dividend yield on the Company's stock
  
0.0
%
  
0.0
%
Unrecognized compensation cost related to non-vested stock-based compensation awards
As of June 30, 2017, unrecognized compensation expense related to non-vested stock-based compensation awards, which will be amortized over the remaining service periods, was as follows:

  
Unrecognized
Compensation
Expense
  
Weighted-Average
Remaining Service
Period in Years
 
Stock options
 
$
3.4
   
3.1
 
Restricted stock awards
  
7.9
   
3.0
 
Performance stock awards
  
7.3
   
2.3
 
Total
 
$
18.6
   
2.7