v3.26.1
Significant Accounting Policies (Details)
1 Months Ended 12 Months Ended
Apr. 30, 2018
USD ($)
Dec. 31, 2025
USD ($)
Vessel
Segment
shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Significant Accounting Policies [Abstract]        
Provision for doubtful accounts   $ 0 $ 0  
Provision for credit losses   0 0  
Estimated residual scrap rate per light-weight ton   $ 0.35 0.3  
Period in which historical data was available   15 years    
Term of estimated charter rates used to determine undiscounted projected operating cash flows   1 year    
Term of historical charter rates used to determine undiscounted projected operating cash flows   10 years    
Number of vessels evaluated for impairment | Vessel   1    
Carrying value of vessels evaluated for impairment plus unamortized dry-docking costs and cost of equipment not yet installed   $ 32,223,000    
Impairment charges   0    
Unamortized dry-docking costs   15,710,000 4,521,000  
Impairment charge $ 0      
Address commissions   5,828,000 6,108,000 $ 3,869,000
Amortization of contract costs   $ 193,000 0 0
Minimum stock ownership percentage under 50% Ownership Test   50.00%    
Minimum stock ownership percentage under 5% Override Rule   50.00%    
Minimum percentage of days stock owned during taxable year under 5% Override Rule   50.00%    
Minimum stock ownership percentage for individual under 5% Override Rule   5.00%    
Number of operating segments | Segment   1    
Number of reportable segments | Segment   1    
Outstanding warrants (in shares) | shares   0    
Intangible assets   $ 1,493,000 973,000  
Intangible assets, non-current   67,000 60,000  
EUAs [Member]        
Significant Accounting Policies [Abstract]        
Intangible assets   1,493,000 973,000  
Intangible assets, non-current   67,000 60,000  
Other Current Assets [Member]        
Significant Accounting Policies [Abstract]        
EUAs due from charterers   368,000 698,000  
Accrued Liabilities [Member]        
Significant Accounting Policies [Abstract]        
EUA obligations   1,336,000 1,671,000  
Statutory Tax Exemption on United States Source Income [Member]        
Significant Accounting Policies [Abstract]        
Income taxes   0 0 $ 0
Seanergy Management [Member]        
Significant Accounting Policies [Abstract]        
Greek annual contribution   152,000 103,000  
Seanergy Management [Member] | General and Administrative Expenses [Member]        
Significant Accounting Policies [Abstract]        
Greek annual contribution   $ 130,000    
Seanergy Management [Member] | Related Party [Member] | United [Member] | Commercial Management Agreement [Member]        
Significant Accounting Policies [Abstract]        
Percentage of contract price paid on purchase or sale of vessel   1.00%    
Seanergy Shipmanagement [Member]        
Significant Accounting Policies [Abstract]        
Greek annual contribution   $ 0 $ 0  
Vessels [Member]        
Significant Accounting Policies [Abstract]        
Estimated useful life   25 years