Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Consolidated Balance Sheets [Abstract]
Accounts Receivable, Reserves	$ 345	$ 356
Preferred Stock, Par Value	$ 10	$ 10
Preferred Stock, Shares Authorized	100,000	100,000
Preferred Stock, Shares Issued
Common Stock, Par Value	$ 0.05	$ 0.05
Common Stock, Shares Authorized	13,000,000	13,000,000
Common Stock, Shares Issued	9,031,756	8,956,488
Treasury Stock, Shares	1,663,214	1,542,276

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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