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Commitments and Contingencies - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended
Apr. 06, 2023
Mar. 31, 2016
Mar. 31, 2023
Mar. 31, 2022
Apr. 04, 2023
Mar. 06, 2023
Dec. 31, 2022
Sep. 30, 2022
Other Commitments [Line Items]                
Cash and cash equivalents     $ 674,428       $ 1,443,421  
Working capital deficit     32,600,000          
Total assets     13,162,380       $ 13,281,836 $ 13,200,000
Cash Lease Obligation     210,760          
Class of warrant or right, Number of securities called by warrants or rights           3,465,778    
Lease rent expense     54,700 $ 54,000        
Subsequent Event [Member]                
Other Commitments [Line Items]                
Sale/leaseback arrangement amount         $ 3,000,000.0      
Corporate Office Space [Member]                
Other Commitments [Line Items]                
Lease Obligation     185,355          
Right Of Use Asset     175,253          
Interest component in remaining lease payment obligations     25,405          
Marine Operations [Member]                
Other Commitments [Line Items]                
Lease Obligation     71,162          
Right Of Use Asset     67,450          
Interest component in remaining lease payment obligations     9,904          
Deep Sea Mineral Company, CIC, LLC [Member] | Loan Agreement [Member] | Subsequent Event [Member]                
Other Commitments [Line Items]                
Principal and interest $ 1,068,000              
MINOSA [Member]                
Other Commitments [Line Items]                
Cash Lease Obligation     674,428          
Promissory Note [Member] | Purchase Agreement [Member]                
Other Commitments [Line Items]                
Debt instrument face amount     $ 13,100,000     $ 13,100,000    
Maximum [Member]                
Other Commitments [Line Items]                
Consultants contingent success fees   $ 700,000            
Maximum [Member] | Purchase Agreement [Member]                
Other Commitments [Line Items]                
Class of warrant or right, Number of securities called by warrants or rights           3,465,778