Revenue from Contracts with Customers (Tables)

3 Months Ended

Apr. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents revenue from contracts with customers disaggregated by product line and timing of revenue recognition:

	Three Months Ended April 30,
	2019		2018
Revenue recognized at a point in time:	(in thousands)
Seamap	$	4,118	$	1,510
Klein	1,557		1,512
SAP	101		480
Total revenue recognized at a point in time	$	5,776	3,502
Revenue recognized over time:
Seamap	$	206	$	206
Total revenue recognized over time	206		206
Total revenue from contracts with customers	$	5,982	$	3,708

The following table presents revenue from contracts with customers disaggregated by geography, based on shipping location of our customers:

	Three Months Ended April 30,
	2019		2018
	(in thousands)
United States	$	756	$	129
Europe, Russia & CIS	2,604		2,019
Middle East & Africa	191		514
Asia-Pacific	1,274		699
Canada & Latin America	1,157		347
Total revenue from contracts with customers	$	5,982	$	3,708

Contract with Customer, Asset and Liability

As of April 30, 2019 and January 31, 2019 contract assets and liabilities consisted of the following:

	April 30, 2019		January 31, 2019
Contract Assets:	(in thousands)
Unbilled revenue-current	$	345	$	340
Unbilled revenue - non-current	—		—
Total unbilled revenue	$	345	$	340
Contract Liabilities:
Deferred revenue & customer deposits - current	$	535	$	556
Deferred revenue & customer deposits - non-current	9		11
Total deferred revenue & customer deposits	$	544	$	567