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Net Income per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Reconciliation between basic and diluted net income per share
Net Income	$ 1,362	$ 1,565	$ 514	$ 1,045
Basic net income per share:
Basic common shares	19,995	19,848	19,928	19,784
Basic net income per common share	$ 0.07	$ 0.08	$ 0.03	$ 0.05
Diluted net income per share:
Basic common shares	19,995	19,848	19,928	19,784
Stock options and restricted stock awards	336	405	406	437
Diluted common shares	20,331	20,253	20,334	20,221
Diluted net income per common share	$ 0.07	$ 0.08	$ 0.03	$ 0.05

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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