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Retention	12 Months Ended
Retention	Jan. 31, 2015
Retention [Abstract]
Retention	Note 4 - Retention Retention receivable is the amount withheld by a customer until a contract is completed. Retention receivables of $5.7 million and $5.0 million were included in the balance of trade accounts receivable as of January 31, 2015 and 2014, respectively.