Note 17 - Segment Reporting (Details Textual)	12 Months Ended
	Jan. 31, 2025 USD ($)	Jan. 31, 2024 USD ($)
Number of Operating Segments	2
Revenue from Contract with Customer, Excluding Assessed Tax	$ 46,863,000	$ 36,510,000
Depreciation	306,000	383,000
Amortization of Intangible Assets	638,000	795,000
Operating Lease, Right-of-Use Asset	$ 1,320,000	1,324,000
Seamap Marine Products [Member]
Number of Operating Segments	1
Seamap Marine Products [Member] | Customer One [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 16,900,000	7,600,000
Seamap Marine Products [Member] | Customer Two [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,100,000	7,100,000
Seamap Marine Products [Member] | Customer Three [Member]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 5,100,000
Seamap Marine Products [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Customers	2	3