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Contracts Receivable
 12 Months Ended
Jan. 31, 2012
Contracts Receivable [Abstract]  
Contracts Receivable

6. Contracts Receivable

Contracts receivable consisted of $2,273,000, due from two customers as of January 31, 2012 and $4,937,000 due from two customers as of January 31, 2011. The balance of contracts receivable at January 31, 2012 and 2011 consists of contracts bearing interest at an average of approximately 9% and with remaining repayment terms from 3 to 5 months. These contracts are collateralized by the equipment sold and are considered collectable, thus no allowances have been established for them.