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Long-Term Debt and Notes Payable (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jan. 31, 2012
Long-Term debt and notes payable
Long-term debt gross	$ 12,705	$ 14,183
Less current portion	(175)	(1,399)
Long-term debt	12,530	12,784
Revolving Credit Facility [Member]
Long-Term debt and notes payable
Long-term debt gross	12,400	12,550
Equipment note [Member]
Long-Term debt and notes payable
Long-term debt gross		638
MCL notes [Member]
Long-Term debt and notes payable
Long-term debt gross	31	785
SAP equipment notes [Member]
Long-Term debt and notes payable
Long-term debt gross	$ 274	$ 210

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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- Definition

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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