Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Revenues:
Sales of marine technology products	$ 10,036,000	$ 7,561,000	$ 19,714,000	$ 18,158,000
Cost of sales:
Sales of marine technology products	5,258,000	4,620,000	10,718,000	10,681,000
Gross profit	4,778,000	2,941,000	8,996,000	7,477,000
Operating expenses:
Selling, general and administrative	2,784,000	2,913,000	5,543,000	6,219,000
Research and development	328,000	493,000	790,000	971,000
Depreciation and amortization	236,000	302,000	503,000	635,000
Total operating expenses	3,348,000	3,708,000	6,836,000	7,825,000
Operating income (loss)	1,430,000	(767,000)	2,160,000	(348,000)
Other income (expense):
Interest expense	0	(163,000)	0	(367,000)
Other, net	40,000	238,000	509,000	310,000
Total other income (expense)	40,000	75,000	509,000	(57,000)
Income (loss) from continuing operations before income taxes	1,470,000	(692,000)	2,669,000	(405,000)
Provision for income taxes	(672,000)	(66,000)	(917,000)	(477,000)
Net income (loss) from continuing operations	798,000	(758,000)	1,752,000	(882,000)
Loss from discontinued operations, net of income taxes	0	(736,000)	0	(852,000)
Net income (loss)	798,000	(1,494,000)	1,752,000	(1,734,000)
Preferred stock dividends - declared	0	0	0	0
Preferred stock dividends - undeclared	(947,000)	(947,000)	(1,894,000)	(1,894,000)
Net loss attributable to common stockholders	$ (149,000)	$ (2,441,000)	$ (142,000)	$ (3,628,000)
Net loss per common share - Basic and Diluted
Continuing operations (in dollars per share)	$ (0.11)	$ (1.21)	$ (0.1)	$ (1.97)
Discontinued operations (in dollars per share)	0	(0.52)	0	(0.61)
Net loss (in dollars per share)	$ (0.11)	$ (1.74)	$ (0.1)	$ (2.58)
Shares used in computing net income (loss) per common share:
Basic and diluted (in shares)	1,406	1,406	1,406	1,406