Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Revenues:
Sales of marine technology products	$ 12,105,000	$ 4,974,000	$ 31,819,000	$ 23,132,000
Cost of sales:
Sales of marine technology products	6,684,000	2,721,000	17,402,000	13,402,000
Gross profit	5,421,000	2,253,000	14,417,000	9,730,000
Operating expenses:
Selling, general and administrative	2,762,000	2,941,000	8,305,000	9,160,000
Research and development	562,000	508,000	1,352,000	1,479,000
Depreciation and amortization	221,000	257,000	724,000	892,000
Total operating expenses	3,545,000	3,706,000	10,381,000	11,531,000
Operating income (loss)	1,876,000	(1,453,000)	4,036,000	(1,801,000)
Other income (expense):
Interest expense	0	(169,000)	0	(536,000)
Other, net	(189,000)	25,000	320,000	336,000
Total other income (expense)	(189,000)	(144,000)	320,000	(200,000)
Income (loss) from continuing operations before income taxes	1,687,000	(1,597,000)	4,356,000	(2,001,000)
Provision for income taxes	(396,000)	(112,000)	(1,313,000)	(590,000)
Net income (loss) from continuing operations	1,291,000	(1,709,000)	3,043,000	(2,591,000)
Income from discontinued operations, net of income taxes	0	2,277,000	0	1,424,000
Net income (loss)	1,291,000	568,000	3,043,000	(1,167,000)
Preferred stock dividends - declared	0	(947,000)	0	(947,000)
Preferred stock dividends - undeclared	(368,000)	0	(2,262,000)	(1,894,000)
Effect of preferred stock conversion	14,785,000	0	14,785,000	0
Net Income (loss) attributable to common stockholders	$ 15,708,000	$ (379,000)	$ 15,566,000	$ (4,008,000)
Net Income (loss) per common share - Basic and Diluted
Continuing operations (in dollars per share)	$ 2.87	$ (1.89)	$ 5.62	$ (3.86)
Discontinued operations (in dollars per share)	0	1.62	0	1.01
Net income (loss) (in dollars per share)	$ 2.87	$ (0.27)	$ 5.62	$ (2.85)
Shares used in computing net income (loss) per common share:
Basic and diluted (in shares)	5,473	1,406	2,772	1,406