Note 5 - Revenue From Contracts With Customers (Tables)

12 Months Ended

Jan. 31, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Twelve Months Ended January 31,
	2022		2021
Revenue recognized at a point in time:	(in thousands)
Seamap	$	16,422	$	16,304
Klein		5,428		4,145
Total revenue recognized at a point in time	$	21,850	$	20,449
Revenue recognized over time:
Seamap	$	871	$	766
Klein	$	386
Total revenue recognized over time		1,257		766
Total revenue from contracts with customers	$	23,107	$	21,215

	Twelve Months Ended January 31,
	2022		2021
Revenue from contracts with customers:	(in thousands)
United States	$	2,409	$	3,687
Europe, Russia & CIS		8,821		8,512
Middle East & Africa		35		1,226
Asia-Pacific		11,244		6,523
Canada & Latin America		598		1,267
Total revenue from contracts with customers	$	23,107	$	21,215

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	January 31, 2022		January 31, 2021
Contract Assets:	(in thousands)
Unbilled revenue-current	$	28	$	85
Total unbilled revenue	$	28	$	85
Contract Liabilities:
Deferred revenue & customer deposits - current	$	2,569	$	691
Total deferred revenue & customer deposits	$	2,569	$	691