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Description of Business and Summary of Significant Accounting Policies (Details) (USD $)
 3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
segment
item
Sep. 30, 2011
Mar. 31, 2012
Description of Business and Summary of Significant Accounting Policies          
Number of divisions     2    
Number of physical locations in which the entity is organized     4    
Number of shares of common stock authorized 25,000,000   25,000,000   25,000,000
Reclassification          
Cost of revenues $ 4,458,000 $ 3,927,000 $ 8,562,000 $ 7,836,000  
Revenue 11,706,000 9,701,000 22,266,000 18,998,000  
Reclassification
          
Reclassification          
Cost of revenues   411,000   820,000  
Revenue   $ 411,000   $ 820,000