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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Oct. 31, 2011
Oct. 31, 2010
Operating activities    
Net loss $ (5,967) $ (890)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 3,823 4,063
Provision for doubtful accounts 45 115
Gain (loss) on sale of property, plant and equipment 1 (5)
Deferred income taxes 246 (277)
Stock based compensation 569 599
Changes in operating assets and liabilities    
Trade accounts receivable (3,238) (5,399)
Other receivables 55 46
Inventories 5,259 10,951
Income taxes (10) (575)
Prepaid expenses and other current assets 356 233
Accounts payable and accrued liabilities 2,282 274
Net cash provided by operating activities 3,421 9,135
Investing activities    
Capital expenditures (1,689) (1,878)
Proceeds from sale of property, plant and equipment   33
Net cash used in investing activities (1,689) (1,845)
Financing activities    
Repayment of long-term debt (1,102) (4,669)
Purchase of treasury stock   (344)
Cash dividend paid (710) (1,062)
Net cash used in financing activities (1,812) (6,075)
Net (decrease) increase in cash (80) 1,215
Cash at beginning of period 1,529 1,045
Cash at end of period 1,449 2,260
Supplemental disclosure:    
Accrual for cash dividends declared but not paid   $ 355