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Income (Loss) Per Share (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Income (loss) per share (Textual) [Abstract]
Diluted weighted average common stock equivalent shares	284,000	135,000	347,000	111,000
Shares covered by antidilutive stock options	121,000	458,000	389,000	508,000
Income (loss) from continuing operations attributable to parent	$ 6,065,000		$ 16,989,000

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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