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Schedule of Allocated Fair Value of Purchase Consideration (Details) - USD ($)
$ in Thousands
Nov. 15, 2021
Jan. 31, 2022
Apr. 30, 2021
Business Acquisition [Line Items]      
Goodwill   $ 7,754
Marine Advanced Robotics, Inc. [Member]      
Business Acquisition [Line Items]      
Total Purchase Consideration $ 11,902    
Intangible assets 3,900    
Marine Advance Robotics Inc [Member]      
Business Acquisition [Line Items]      
Cash 12    
Inventories 150    
Property and equipment, net 38    
Goodwill 7,754    
Net assets acquired 11,902    
Marine Advance Robotics Inc [Member] | Patents [Member]      
Business Acquisition [Line Items]      
Intangible assets 1,193    
Marine Advance Robotics Inc [Member] | Trade Names [Member]      
Business Acquisition [Line Items]      
Intangible assets $ 2,755