Note 4 - Revenue From Contracts With Customers (Tables)

3 Months Ended

Apr. 30, 2025

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended April 30,
	2025		2024
Revenue recognized at a point in time:	(in thousands)
Total revenue recognized at a point in time	$	7,556	$	9,377
Revenue recognized over time:
Total revenue recognized over time		346		301
Total revenue from contracts with customers	$	7,902	$	9,678

	Three Months Ended April 30,
	2025		2024
	(in thousands)
United States	$	550	$	325
China		259		5,768
Norway		3,275		2,758
Turkey		227		33
Singapore		1,027		211
Canada		517		—
Japan		678		203
Other		1,369		380
Total revenue from contracts with customers	$	7,902	$	9,678

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

	April 30, 2025			April 30, 2024
Contract Assets:	(in thousands)
Contract Assets, beginning balance	$	20		$	26
Revenue accrued	$	42		$	—
Amounts billed	$	(20	)	$	(10	)
Total unbilled revenue	$	42		$	16
Contract Liabilities:
Contract liabilities, beginning balance	$	1,792		$	3,649
Deferred revenue and customer deposits	$	1,574		$	625
Revenue recognized	$	(1,045	)	$	(745	)
Total deferred revenue & customer deposits	$	2,321		$	3,529