Concentrations (Details) (USD $)	12 Months Ended
	Jan. 31, 2013 Customers	Jan. 31, 2012 Customers
Concentrations (Textual) [Abstract]
Minimum rate of consolidated accounts receivable	10.00%	10.00%
Foreign bank deposits	15,951,000
Credit Risk [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Number of suppliers manufacture land based seismic systems and equipment in use	3	2
Two Major Customer [Member] | Credit Risk [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Aggregate amount of accounts receivable from customers		8,346,000
Three Major Customer [Member] | Credit Risk [Member]
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]
Aggregate amount of accounts receivable from customers	9,591,000