Balance Sheet (Details) (USD $)	Jul. 31, 2013	Jan. 31, 2013
Accounts receivable:
Accounts receivable	$ 26,932,000	$ 26,505,000
Allowance for doubtful accounts	(3,281,000)	(3,374,000)
Total accounts receivable, net	23,651,000	23,131,000
Contracts and notes receivable:
Contracts receivable	858,000	904,000
Notes receivable	217,000	1,471,000
Less current portion	(1,075,000)	(2,096,000)
Long-term portion		$ 279,000

Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of account and note receivables due from other than related parties.

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Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

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