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Note 2 - Earnings Per Common Share (Tables) | 12 Months Ended
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Mar. 31, 2013
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended March 31, |
|  | 2013 |  |  | 2012 |
Net income |  | $ | 1,669,860 |  |  | $ | 1,350,224 |
Earnings Per Share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.68 |  |  | $ | 0.55 |
Diluted |  | $ | 0.68 |  |  | $ | 0.55 |
Weighted Average Shares Outstanding: |  |  |  |  |  |  |  |
Basic |  |  | 2,446,286 |  |  |  | 2,443,786 |
Diluted |  |  | 2,454,368 |  |  |  | 2,451,209 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration