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Note 6 - Earnings (Loss) Per Share (Detail)
3 Months Ended 9 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2012
Oct. 31, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 330,000 90,000 330,000 140,000