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Accrued Expenses and Other Liabilities (Details 1) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Beginning balance	$ 226,000	$ 144,000
Cost incurred	(146,000)	(162,000)
Provision for warranty cost	87,000	244,000
Ending balance	$ 167,000	$ 226,000

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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