Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
Revenues:
Sale of marine technology products	$ 9,277	$ 5,955	$ 18,720	$ 22,429
Equipment leasing	3,166	2,071	7,493	5,765
Sale of lease pool equipment and other equipment sales	2,208	618	4,401	9,719
Total revenues	14,651	8,644	30,614	37,913
Cost of sales:
Sale of marine technology products	4,904	3,132	10,206	12,975
Equipment leasing (including lease pool depreciation of $2,176 and $3,578 for the three months ended October 31, 2018 and 2017 respectively, and $7,275 and $11,509 for the nine months ended October 31, 2018 and 2017 respectively)	3,296	4,400	10,120	13,815
Lease pool equipment and other equipment sales	1,227	211	1,959	6,410
Total cost of sales	9,427	7,743	22,285	33,200
Gross profit	5,224	901	8,329	4,713
Operating expenses:
Selling, general and administrative	4,819	4,879	15,953	14,508
Research and development	175	299	857	637
Provision for doubtful accounts	0	0	200	0
Depreciation and amortization	579	516	1,816	1,622
Total operating expenses	5,573	5,694	18,826	16,767
Operating loss	(349)	(4,793)	(10,497)	(12,054)
Other income (expense):
Loss on sale (including $5,355 of cumulative translation loss)	(4,905)	0	(4,905)	0
Interest income, net	12	52	47	23
Other, net	(198)	46	(57)	(107)
Total other (expenses) income	(5,091)	98	(4,915)	(84)
Loss before income taxes	(5,440)	(4,695)	(15,412)	(12,138)
Benefit (provision) for income taxes	249	(586)	(273)	(1,172)
Net loss	(5,191)	(5,281)	(15,685)	(13,310)
Preferred stock dividends	(449)	(229)	(1,245)	(630)
Net loss attributable to common shareholders	$ (5,640)	$ (5,510)	$ (16,930)	$ (13,940)
Net loss per common share:
Basic (in usd per share)	$ (0.47)	$ (0.46)	$ (1.40)	$ (1.15)
Diluted (in usd per share)	$ (0.47)	$ (0.46)	$ (1.40)	$ (1.15)
Shares used in computing net loss per common share:
Basic (in shares)	12,119	12,087	12,100	12,082
Diluted (in shares)	12,119	12,087	12,100	12,082