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Share-based Payments (Details) - shares
Mar. 31, 2017
Mar. 31, 2016
2003 Long-Term Incentive Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option to purchase common stock, outstanding (in shares) 10,350 89,350
Shares of common stock available for grant (in shares) 0 0
2004 Non-Employee Director Stock Option Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Option to purchase common stock, outstanding (in shares) 128,000 154,000
Shares of common stock available for grant (in shares) 0 0
2010 Incentive Award Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock shares reseved for grants (in shares) 2,750,000  
Option to purchase common stock, outstanding (in shares) 898,009 740,716
Shares of common stock available for grant (in shares) 688,765 964,039
2010 Incentive Award Plan [Member] | Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares issued (in shares) 88,894 137,321
2014 Non-Employee Director Incentive Award Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock shares reseved for grants (in shares) 342,000  
Shares of common stock available for grant (in shares) 263,078 308,411
2014 Non-Employee Director Incentive Award Plan [Member] | Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares issued (in shares) 37,383 16,206