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Share-based Payments (Details) - USD ($)
9 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Stock Options [Member]    
Summary of Black-Scholes option pricing model assumptions used to derive weighted average fair value of stock options granted [Abstract]    
Weighted average risk free interest rate 1.73% 1.75%
Weighted average expected holding period 5 years 9 months 4 days 5 years 4 days
Weighted average expected volatility 46.84% 46.02%
Weighted average expected dividend yield 0.00% 0.00%
Weighted average fair value of options granted (in dollars per share) $ 14.14 $ 9.65
Number of Shares [Roll Forward]    
Outstanding at beginning of period (in shares) 1,389,254  
Granted (in shares) 111,222 82,537
Exercised (in shares) (305,871)  
Cancelled (in shares) (4,466)  
Outstanding at end of period (in shares) 1,190,139  
Weighted Average Exercise Price [Roll Forward]    
Outstanding at beginning of period (in dollars per share) $ 9.97  
Granted (in dollars per share) 31.16  
Exercised (in dollars per share) 9.98  
Cancelled (in dollars per share) 20.91  
Outstanding at end of period (in dollars per share) $ 11.91  
Number of stock options exercisable (in shares) 923,666  
Weighted average exercise price of stock options exercisable (in dollars per share) $ 9.07  
Total unrecognized compensation expense $ 2,174,000  
Weighted average vesting period over which compensation expense is expected to be recognized 1 year 7 months 6 days  
Restricted Stock (RSUs) [Member]    
Weighted Average Exercise Price [Roll Forward]    
Weighted average vesting period over which compensation expense is expected to be recognized 1 year 7 months 6 days  
Number of Shares [Roll Forward]    
Non-vested at beginning of period (in shares) 181,443  
Granted (in shares) 49,702 95,645
Vested (in shares) (75,519)  
Cancelled (in shares) (2,099)  
Non-vested at end of period (in shares) 153,527  
Weighted Average Grant Date Fair Value [Roll Forward]    
Non-vested at beginning of period (in dollars per share) $ 16.84  
Granted (in dollars per share) 31.50  
Vested (in dollars per share) 15.34  
Cancelled (in dollars per share) 20.05  
Non-vested at end of period (in dollars per share) $ 22.28  
Total unrecognized compensation expense $ 2,824,000  
Estimated fair value of awards granted $ 1,566,000 $ 2,316,000