Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Expense - Restricted Shares (Details)

v2.4.0.8
Stock-Based Compensation Expense - Restricted Shares (Details) (USD $)
 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Restricted Stock [Member]
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate intrinsic value $ 406,000    
Total unrecognized expense related to non-vested stock option awards 130,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, beginning of period (in shares) 21,000 16,000 0
Granted (in shares) 17,000 13,000 16,000
Exercised (in shares) (21,000) (8,000) 0
Forfeited (in shares) 0 0 0
Outstanding, end of period (in shares) 18,000 21,000 16,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Options outstanding, weighted average grant price, beginning of period (in dollars per share) $ 18.09 $ 12.42 $ 0.00
Granted, weighted average exercise price (in dollars per share) $ 20.09 $ 21.52 $ 12.42
Exercised, weighted average exercise price (in dollars per share) $ 18.09 $ 12.42 $ 0.00
Forfeited, weighted average exercise price (in dollars per share) $ 0.00 $ 0.00 $ 0.00
Options outstanding, weighted average grant price, end of period (in dollars per share) $ 20.09 $ 18.09 $ 12.42
Stock based compensation, recognition period 0 years 4 months 6 days    
Restricted Stock Units (RSUs) [Member]
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate intrinsic value 3,809,000    
Total unrecognized expense related to non-vested stock option awards 2,558,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, beginning of period (in shares) 71,109 0  
Granted (in shares) 117,904 71,923  
Exercised (in shares) (18,786) 0  
Forfeited (in shares) (5,902) (814)  
Outstanding, end of period (in shares) 164,325 71,109  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Options outstanding, weighted average grant price, beginning of period (in dollars per share) $ 21.52 $ 0.00  
Granted, weighted average exercise price (in dollars per share) $ 20.14 $ 21.52  
Exercised, weighted average exercise price (in dollars per share) $ 21.52 $ 0.00  
Forfeited, weighted average exercise price (in dollars per share) $ 21.52 $ 21.52  
Options outstanding, weighted average grant price, end of period (in dollars per share) $ 20.53 $ 21.52  
Stock based compensation, recognition period 2 years 2 months 1 day    
Performance Shares [Member]
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period, Value 480,000 960,000  
Total unrecognized expense related to non-vested stock option awards $ 384,000    
Vested shares 12,254    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Granted (in shares) 10,594 0  
Forfeited (in shares) (1,660)    
Minimum [Member] | Performance Shares [Member]
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share Based Compensation Arrangement, Possible Number Of Shares Issued Each Year 0 0  
Maximum [Member] | Performance Shares [Member]
      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share Based Compensation Arrangement, Possible Number Of Shares Issued Each Year 29,036 29,430