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Revenue from Contracts with Customers
 6 Months Ended
Jul. 31, 2021
Revenue from Contract with Customer [Abstract]  
Revenue from Contracts with Customers Revenue from Contracts with Customers
The following table presents revenue from contracts with customers disaggregated by product line and timing of revenue recognition:
 Three Months Ended July 31,Six Months Ended July 31,
2021202020212020
Revenue recognized at a point in time:(in thousands)
Seamap$5,256 $3,881 $8,169 $5,870 
Klein1,406 1,004 2,556 2,002 
Total revenue recognized at a point in time$6,662 $4,885 $10,725 $7,872 
Revenue recognized over time:
Seamap$145 $201 $276 $401 
Total revenue recognized over time145 201 276 401 
Total revenue from contracts with customers$6,807 $5,086 $11,001 $8,273 

The revenue from products manufactured and sold by our Seamap and Klein businesses is generally recognized at a point in time, or when the customer takes possession of the product, based on the terms and conditions stipulated in our contracts with customers. Our Seamap business also provides Software Maintenance Agreements (“SMA”) to customers who have an active license for software embedded in Seamap products. The revenue from SMA’s is recognized over time, with the total value of the SMA amortized in equal monthly amounts over the life of the contract, which is typically twelve months.
The following table presents revenue from contracts with customers disaggregated by geography, based on shipping location of our customers:
 Three Months Ended July 31,Six Months Ended July 31,
2021202020212020
(in thousands)
United States$219 $686 $578 $1,786 
Europe3,520 1,604 6,102 2,980 
Middle East & Africa675 221 689 297 
Asia-Pacific2,188 2,222 2,893 2,499 
Canada & Latin America205 353 739 711 
Total revenue from contracts with customers$6,807 $5,086 $11,001 $8,273 
As of July 31, 2021, and January 31, 2021, contract assets and liabilities consisted of the following:
July 31, 2021January 31, 2021
Contract Assets:(in thousands)
Unbilled revenue - current$106 $85 
Total unbilled revenue$106 $85 
Contract Liabilities:
Deferred revenue & customer deposits - current$399 $691 
Total deferred revenue & customer deposits$399 $691 
Considering the products manufactured and sold by our Seamap and Klein businesses and the Company’s standard contract terms and conditions, we expect our contract assets and liabilities to turn over, on average, within a period of three to nine months.
Pursuant to our accounting policies and procedures related to revenue from contracts with customers, sales and transaction-based taxes are excluded from revenue. Also, we do not disclose the value of unsatisfied performance obligations for contracts with an original expected duration of one year or less. Additionally, we expense costs incurred to obtain contracts when incurred because the amortization period would have been one year or less. These costs are recorded in selling, general and administrative expenses.