Net Income (Loss) per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Apr. 30, 2015	Apr. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income (loss)	$ (3,178)us-gaap_NetIncomeLoss	$ (3,855)us-gaap_NetIncomeLoss
Average shares outstanding	14,824,000	14,718,000
Net effect of dilutive stock options based on the treasury stock method using average market price	0	0
Totals	14,824,000	14,718,000
Earnings Per Share, Basic	$ (0.21)us-gaap_EarningsPerShareBasic	$ (0.26)us-gaap_EarningsPerShareBasic
Earnings Per Share, Diluted	$ (0.21)us-gaap_EarningsPerShareDiluted	$ (0.26)us-gaap_EarningsPerShareDiluted
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	233,000	266,000

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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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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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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