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Note 2 - Earnings Per Common Share | 12 Months Ended
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Mar. 31, 2013
Earnings Per Share [Text Block] | 2. EARNINGS PER COMMON SHARE Basic earnings per share has been calculated by dividing net income by the weighted average number of common shares outstanding during each period. For purposes of calculating diluted earnings per share, shares issuable under stock options were considered potential common shares and were included in the weighted average common shares unless they were anti-dilutive. For each of the years ended March 31, 2013 and 2012, respectively, options to acquire 31,000 shares of common stock were not included in computing earnings per share because their effects were anti-dilutive. The computation of earnings per common share is as follows:
|  | 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 The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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