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Note 4 - Earnings Per Share (Details)	3 Months Ended
Note 4 - Earnings Per Share (Details)	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants	133,600	106,600

- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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