Debt Narrative (Details) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 38,000,000
Line of Credit Facility, Expiration Date	Nov. 30, 2016
Debt Instrument, Maturity Date	Nov. 30, 2013
Line of Credit Facility, Dividend Restrictions	do not permit payment of dividends
Current Fiscal Year End Date	--01-31
Foreign line of credit	2,529,000	1,526,000
Restricted Cash and Cash Equivalents	725,000	1,854,000
Line of Credit Facility, Covenant Compliance	in compliance with all covenants under the Loan Agreement
Line of Credit Facility, Interest Rate Description	(a) a margin in effect plus a prime rate; or (b) a margin in effect plus the LIBOR rate for the corresponding interest period.
Line of Credit Facility, Interest Rate at Period End	3.25%
Line of Credit Facility, Remaining Borrowing Capacity	2,900,000
Letters of Credit Outstanding, Amount	200,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	0.25%
Debt Instrument, Basis Spread on Variable Rate	2.75%
Line of Credit [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
UNITED STATES
Line of Credit Facility [Line Items]
Revolving line	13,989,000	18,252,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 4,800,000