Note 4 - Revenue From Contracts With Customers (Tables)

6 Months Ended

Jul. 31, 2025

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended July 31,				Six Months Ended July 31,
	2025		2024		2025		2024
Revenue recognized at a point in time:	(in thousands)
Total revenue recognized at a point in time	$	13,215	$	9,661	$	20,771	$	19,038
Revenue recognized over time:
Total revenue recognized over time		346		375		692		676
Total revenue from contracts with customers	$	13,561	$	10,036	$	21,463	$	19,714

	Three Months Ended July 31,				Six Months Ended July 31,
	2025		2024		2025		2024
	(in thousands)
United States	$	736	$	446	$	1,286	$	771
China		618		1,462	$	877	$	7,230
Norway		8,906		6,217	$	12,181	$	8,975
Turkey		982		205	$	1,209	$	238
Singapore		1,413		260	$	2,440	$	471
Canada		152		—		669		—
Japan		272		21		950		224
Other		482		1,425		1,851		1,805
Total revenue from contracts with customers	$	13,561	$	10,036	$	21,463	$	19,714

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

	July 31, 2025			July 31, 2024
Contract Assets:	(in thousands)
Contract Assets, beginning balance	$	20		$	26
Revenue accrued	$	12		$	102
Amounts billed	$	(20	)	$	(26	)
Total unbilled revenue	$	12		$	102
Contract Liabilities:
Contract liabilities, beginning balance	$	1,792		$	3,649
Deferred revenue and customer deposits	$	1,186		$	760
Revenue recognized	$	(1,646	)	$	(1,255	)
Total deferred revenue & customer deposits	$	1,332		$	3,154