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Business Combination (Details Narrative) - USD ($)
 3 Months Ended 9 Months Ended
Nov. 15, 2021
Feb. 01, 2021
Jan. 31, 2022
Jan. 31, 2022
Business Acquisition [Line Items]        
Stock Issued During Period, Value, Acquisitions     $ 5,855,000 $ 5,855,000
Acquisition related costs       $ 300,000
3Dent Acquisition [Member]        
Business Acquisition [Line Items]        
Stock Issued During Period, Shares, Acquisitions   361,991    
Stock Issued During Period, Value, Acquisitions   $ 360,000    
Business Acquisition, Share Price   $ 4.01    
Marine Advanced Robotics, Inc. [Member]        
Business Acquisition [Line Items]        
Payments to Acquire Businesses, Gross $ 4,000,000      
Business Combination, Contingent Consideration, Asset $ 1,591,000      
Business combination, description the contingent consideration consists of two earn-out periods, one running from the date of the acquisition through April 30, 2023 in which the maximum earn-out is $1.5 million and the other from May 1, 2023 through April 30, 2024 where the maximum earn-out is $2 million. The fair value as of the date of acquisition was determined using a simulation model based on an estimate of revenues during these periods and discount factors ranging from 5.8% to 14.5%.      
Business Combination, Consideration Transferred $ 11,902,000      
Business acquistion intangible assets $ 3,900,000      
Marine Advanced Robotics, Inc. [Member] | Restricted Stock [Member]        
Business Acquisition [Line Items]        
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares 3,330,162      
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned $ 5,900,000      
Business Acquisition, Share Price $ 2.10