Schedule of Revenue Recognizes from Operating Lease Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Product Information [Line Items]
Revenue	$ 2,418	$ 889	$ 3,719	$ 2,161
North and South America [Member]
Product Information [Line Items]
Revenue	1,491	792	2,720	2,046
Europe [Member]
Product Information [Line Items]
Revenue			997	115
Asia and Australia [Member]
Product Information [Line Items]
Revenue	2		2
Region [Member]
Product Information [Line Items]
Revenue	2,418	889	3,719	2,161
EMEA [Member]
Product Information [Line Items]
Revenue	925	97
WAM-V [Member]
Product Information [Line Items]
Revenue	2,247	347	3,548	1,049
Buoy [Member]
Product Information [Line Items]
Revenue	171	380	171	630
Service [Member]
Product Information [Line Items]
Revenue		162		482
Product [Member]
Product Information [Line Items]
Revenue	2,418	889	3,719	2,161
Accounting Standards Update 2014-09 [Member] \| North and South America [Member]
Product Information [Line Items]
Revenue	1,491	605	2,720	1,634
Accounting Standards Update 2014-09 [Member] \| Europe [Member]
Product Information [Line Items]
Revenue			865	18
Accounting Standards Update 2014-09 [Member] \| Asia and Australia [Member]
Product Information [Line Items]
Revenue	2		2
Accounting Standards Update 2014-09 [Member] \| Region [Member]
Product Information [Line Items]
Revenue	2,353	623	3,587	1,652
Accounting Standards Update 2014-09 [Member] \| EMEA [Member]
Product Information [Line Items]
Revenue	860	18
Accounting Standards Update 2014-09 [Member] \| WAM-V [Member]
Product Information [Line Items]
Revenue	2,182	81	3,416	540
Accounting Standards Update 2014-09 [Member] \| Buoy [Member]
Product Information [Line Items]
Revenue	171	380	171	630
Accounting Standards Update 2014-09 [Member] \| Service [Member]
Product Information [Line Items]
Revenue		162		482
Accounting Standards Update 2014-09 [Member] \| Product [Member]
Product Information [Line Items]
Revenue	2,353	623	3,587	1,652
Accounting Standards Update 2016-02 [Member] \| North and South America [Member]
Product Information [Line Items]
Revenue		187		412
Accounting Standards Update 2016-02 [Member] \| Europe [Member]
Product Information [Line Items]
Revenue			132	97
Accounting Standards Update 2016-02 [Member] \| Asia and Australia [Member]
Product Information [Line Items]
Revenue
Accounting Standards Update 2016-02 [Member] \| Region [Member]
Product Information [Line Items]
Revenue	65	266	132	509
Accounting Standards Update 2016-02 [Member] \| EMEA [Member]
Product Information [Line Items]
Revenue	65	79
Accounting Standards Update 2016-02 [Member] \| WAM-V [Member]
Product Information [Line Items]
Revenue	65	266	132	509
Accounting Standards Update 2016-02 [Member] \| Buoy [Member]
Product Information [Line Items]
Revenue
Accounting Standards Update 2016-02 [Member] \| Service [Member]
Product Information [Line Items]
Revenue
Accounting Standards Update 2016-02 [Member] \| Product [Member]
Product Information [Line Items]
Revenue	$ 65	$ 266	$ 132	$ 509