Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 31, 2015	Jan. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance for doubtful accounts	$ 6,339	$ 3,833
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	1,000,000us-gaap_PreferredStockSharesAuthorized	1,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000us-gaap_CommonStockSharesAuthorized	20,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	14,012,000us-gaap_CommonStockSharesIssued	13,907,000us-gaap_CommonStockSharesIssued
Treasury stock, shares	1,928,000us-gaap_TreasuryStockShares	1,075,000us-gaap_TreasuryStockShares

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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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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