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Debt (Long-term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Debt Instrument [Line Items]
Long-term debt	$ 4,053	$ 11,508
Less current portion	4,053	5,497
Non-current portion	0	6,011
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	4,053	11,485
Other Debt [Member]
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 23

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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