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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

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