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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Stock-Based Compensation [Abstract]    
Stock-based compensation cost $ 1.4 $ 1.1
Unrecognized compensation cost and recognition period [Abstract]    
Unrecognized compensation cost $ 13.7  
Weighted-average remaining service period 2 years 9 months 18 days  
Stock Options [Member]    
Type and fair value of stock-based compensation awards granted [Abstract]    
Options granted (in shares) 0.3 0.2
Weighted-average fair value of options (in dollars per share) $ 4.60 $ 7.11
Assumptions used in determining fair value of options [Abstract]    
Expected life of awards 6 years 4 months 24 days 6 years 3 months 18 days
Risk-free interest rate 1.40% 1.90%
Expected volatility of the Company's stock 45.50% 66.90%
Expected dividend yield on the Company's stock 0.00% 0.00%
Unrecognized compensation cost and recognition period [Abstract]    
Unrecognized compensation cost $ 3.1  
Weighted-average remaining service period 3 years  
Restricted Stock - Retention [Member]    
Type and fair value of stock-based compensation awards granted [Abstract]    
Stock granted (in shares) 0.3 0.3
Fair value of stock granted (in dollars per share) $ 10.00 $ 11.39
Unrecognized compensation cost and recognition period [Abstract]    
Unrecognized compensation cost $ 7.0  
Weighted-average remaining service period 3 years  
Restricted Stock - Performance Based [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Award performance period 3 years  
Type and fair value of stock-based compensation awards granted [Abstract]    
Stock granted (in shares) 0.3 0.2
Fair value of stock granted (in dollars per share) $ 10.00 $ 11.39
Unrecognized compensation cost and recognition period [Abstract]    
Unrecognized compensation cost $ 3.6  
Weighted-average remaining service period 2 years 4 months 24 days