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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Mar. 31, 2015
Accounting Policies [Abstract] |
Schedule of cash dividends declared |
Fiscal Year |  | Date Declared |  | Record Date |  | Date Paid |  | Amount of Dividend |
2014 |  | May 7, 2013 |  | June 21, 2013 |  | June 28, 2013 |  | $ | 0.12 |
|  | August 13, 2013 |  | September 20, 2013 |  | September 27, 2013 |  |  | 0.12 |
|  |  |  |  |  |  |  | $ | 0.24 |
2013 |  | May 2, 2012 |  | May 30, 2012 |  | June 6, 2012 |  | $ | 0.10 |
|  | August 8, 2012 |  | August 30, 2012 |  | September 6, 2012 |  |  | 0.12 |
|  | November 9, 2012 |  | November 30, 2012 |  | December 6, 2012 |  |  | 0.12 |
|  | December 11, 2012 |  | December 21, 2012 |  | December 28, 2012 |  |  | 2.00 |
|  | February 19, 2013 |  | March 22, 2013 |  | March 29, 2013 |  |  | 0.12 |
|  |  |  |  |  |  |  | $ | 2.46 |
Schedule of property and equipment estimated useful lives |
Automobiles |  | 3 years
Equipment |  | 5 years
Furniture and fixtures |  | 7 years
Leasehold improvements |  | Lesser of lease term or useful life (generally 6 - 7 years)
Schedule of computation of basic and diluted earnings per share |
|  | Fiscal Year ended March 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Numerator for earnings per share – net income |  | $ | 16,855,892 |  |  | $ | 16,703,352 |  |  | $ | 19,940,946 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per share – weighted average shares |  |  | 12,012,765 |  |  |  | 12,096,372 |  |  |  | 11,977,174 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock options and other share awards |  |  | 178,991 |  |  |  | 228,873 |  |  |  | 241,242 |
Denominator for diluted earnings per share |  |  | 12,191,756 |  |  |  | 12,325,245 |  |  |  | 12,218,416 |
Earnings per share – basic |  | $ | 1.40 |  |  | $ | 1.38 |  |  | $ | 1.66 |
Earnings per share – diluted |  | $ | 1.38 |  |  | $ | 1.36 |  |  | $ | 1.63 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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