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Description of Business and Summary of Significant Accounting Policies (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended
Mar. 31, 2013
item
Oct. 02, 2012
Mar. 31, 2012
Mar. 31, 2012
Retained Earnings
Mar. 31, 2011
Retained Earnings
Mar. 31, 2010
Retained Earnings
Mar. 31, 2012
Common Stock
Mar. 31, 2011
Common Stock
Mar. 31, 2010
Common Stock
Description of Business and Basis of Presentation                  
Number of divisions 2                
Number of physical locations in which the entity is organized 4                
Number of shares of common shares authorized prior to amendment   8,000,000              
Number of authorized shares of common stock 25,000,000 25,000,000 25,000,000            
Basis of Presentation [Line Items]                  
Reclassification adjustment related to stock-based compensation expense       $ (464,000) $ (383,000)   $ 464,000 $ 383,000  
Cumulative reclassification adjustment related to stock-based compensation expense       $ (1,867,000)   $ (1,020,000) $ 1,867,000   $ 1,020,000