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Note 11 - Net Income Per Share | 12 Months Ended
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Mar. 31, 2014
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Note 11. Net Income Per Share Basic net income per share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted net income per share is computed similarly to basic net income per share, except that it includes the potential dilution that could occur if dilutive securities were exercised. The following table presents a reconciliation of the denominators used in the computation of net income per share - basic and diluted (in thousands, except share data):
|  | Year Ended March 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Net income available for stockholders |  | $ | 9,000 |  |  | $ | 8,450 |  |  | $ | 7,919 |
Weighted average outstanding shares of common stock |  |  | 3,445 |  |  |  | 3,357 |  |  |  | 3,285 |
Dilutive effect of stock options |  |  | 166 |  |  |  | 236 |  |  |  | 177 |
Common stock and equivalents |  |  | 3,611 |  |  |  | 3,593 |  |  |  | 3,462 |
Net Income per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 2.61 |  |  | $ | 2.52 |  |  | $ | 2.41 |
Diluted |  |  | 2.49 |  |  |  | 2.35 |  |  |  | 2.29 |
For the years ended March 31, 2014, 2013 and 2012, no shares attributable to outstanding stock options were excluded from the calculation of diluted earnings per share because the exercise prices of the stock options were greater than or equal to the average price of the common shares.

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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 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: 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 3: 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 4: 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=32703322&loc=d3e4984-109258 Reference 5: 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=26872669&loc=d3e20235-122688 + Details
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