Customer [Domain]
Investment, Name [Domain]
Board of Directors [Member]
Scenario [Domain]
Scenario [Axis]
Investment, Name [Axis]
Customer [Axis]
Statistical Measurement [Axis]
Statistical Measurement [Domain]
Maximum [Member]
Minimum [Member]
Counterparty Name [Axis]
Counterparty Name [Domain]
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Ownership [Axis]
Ownership [Domain]
Product and Service [Domain]
Product and Service [Axis]
Accounts receivable trade
Accumulated other comprehensive (loss) / income
Beginning balance
Ending balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Additional paid-in capital
Depreciation and amortization
Depreciation
Amortization of deferred dry-docking costs
Amortization of Deferred Charges
Restricted Stock [Member]
Condensed Consolidated Balance Sheets [Abstract]
Earnings / (loss) per common share, basic (in dollars per share)
Earnings / (loss) per share attributable to common shareholders, basic (in dollars per share)
Cash and cash equivalents
Cash and cash equivalents
Cash and Cash Equivalent
Interest paid
Interest Paid, Excluding Capitalized Interest, Operating Activity
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Common stock, shares authorized (in shares)
Common stock, shares issued (in shares)
Common stock, shares outstanding (in shares)
Common stock, $0.0001 par value; 2,000,000,000 authorized shares as at June 30, 2026 and December 31, 2025; 9,538,139 and 9,083,645 shares issued and outstanding as at June 30, 2026 and December 31, 2025, respectively
Comprehensive income / (loss) attributable to United Maritime Corporation
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Concentration Risk Type [Axis]
Concentration Risk [Line Items]
Concentration Risk [Table]
Concentration Risk Type [Domain]
Total current liabilities
Liabilities, Current
Current liabilities:
Liabilities, Current [Abstract]
Customer Concentration Risk [Member]
Customer Concentration Risk [Member]
Long-Term Debt and Other Financial Liabilities [Abstract]
Long-Term Debt and Lease Obligation [Abstract]
Long-term debt and other financial liabilities
Balance outstanding
Total
Frequency of periodic payment
Debt Instrument, Frequency of Periodic Payment
Debt Instrument, Name [Domain]
Installment payment
Debt Instrument, Periodic Payment, Principal
Long-Term Debt and Other Financial Liabilities [Abstract]
Debt Instrument [Axis]
Debt Instrument [Line Items]
Schedule of Long-Term Debt Instruments [Table]
Unamortized balance of drydocking cost
Deferred Costs, Noncurrent
Cash and Cash Equivalents and Restricted Cash
Cash and Cash Equivalents Disclosure [Text Block]
Earnings / (loss) per common share, diluted (in dollars per share)
Earnings / (loss) per share attributable to common shareholders, diluted (in dollars per share)
Equity Method Investments
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Dividend payable (in dollars per share)
Dividend payable (in dollars per share)
Dividend payable, date declared
Dividends Payable, Date Declared
Dividends Payable [Line Items]
Dividends Payable [Table]
Loss on equity method investment
Income (Loss) from Equity Method Investments
Share-based compensation expense
Equity method investment
Equity Method Investments
Ownership percentage
Equity Method Investment, Ownership Percentage
Gain (loss) on sale of vessels, net
Gain / (loss) on sale of vessel, net
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
Loss on extinguishment of debt
General and administration expenses
General and Administrative Expense
General and Administrative Expenses [Member]
Unaudited Interim Condensed Consolidated Statement of Operations [Abstract]
Interest on long-term debt and other financial liabilities
Other
Inventories
Inventory, Net
Total liabilities
Liabilities
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities and Equity
LIABILITIES AND STOCKHOLDERS' EQUITY
Less - current portion
Current portion of long-term debt and other financial liabilities, net of deferred finance costs and debt discounts of $491 and $339, respectively
Long-term portion
Long-term debt and other financial liabilities, net of current portion and deferred finance costs and debt discounts of $696 and $518, respectively
Balance outstanding
Balance outstanding
Total
Non-controlling interest
Equity, Attributable to Noncontrolling Interest
Ownership percentage
Dividends to non-controlling shareholders of subsidiary (Note 9)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Related and Nonrelated Parties [Axis]
Net cash used in financing activities
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Cash flows from financing activities:
Net cash provided by investing activities
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Cash flows from investing activities:
Net cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided by operating activities
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Net income / (loss) attributable to common stockholders of United Maritime Corporation
Net Income (Loss)
Net income / (loss) attributable to common shareholders, basic
Net Income (Loss) Available to Common Stockholders, Basic
Total other expenses, net
Nonoperating Income (Expense)
Interest and Finance Costs [Abstract]
Non-current liabilities:
Operating income / (loss)
Operating Income (Loss)
Vessel revenue, net
Vessel revenues, net of commissions
Revenues [Abstract]
Basis of Presentation and General Information
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Other current assets
Other income
Dividends paid
Dividends paid
Payments of Ordinary Dividends, Common Stock
Dividends [Abstract]
Dividends to non-controlling shareholders of subsidiary
Dividends to non-controlling shareholders of subsidiary
Payments of Ordinary Dividends, Noncontrolling Interest
Preferred stock, shares authorized (in shares)
Preferred stock, shares issued (in shares)
Preferred stock, shares outstanding (in shares)
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Prepaid expenses
Prepaid Expense, Current
Proceeds from related party loan
Proceeds from sale of vessel
Proceeds from sale of vessel
Proceeds from disposal of equity method investment
Proceeds from long-term debt and other financial liabilities
Proceeds from Issuance of Secured Debt
Beginning balance
Ending balance
Property, Plant and Equipment, Gross
Net book value
Vessels, Net [Abstract]
Vessels' acquisition and improvements
Payments to Acquire Property, Plant, and Equipment
Related and Nonrelated Parties [Domain]
Total
Related Party Transaction, Amounts of Transaction
Related Party Transaction [Line Items]
Transactions with Related Parties
Related Party Transaction [Table]
Payments of related party loan
Repayments of Related Party Debt
Repayments of long-term debt and other financial liabilities
Repayments of Secured Debt
Payments for repurchase of common stock
Payments for repurchase of common stock
Payments for Repurchase of Common Stock
Retained earnings
Retained Earnings (Accumulated Deficit)
Vessels, Net
Property, Plant and Equipment [Table Text Block]
Series B [Member]
Series B Preferred Stock [Member]
Equity Incentive Plan [Abstract]
Share-Based Payment Arrangement, Disclosure [Abstract]
Shares granted (in shares)
Shares granted (in shares)
Grant date fair value (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Unrecognized cost for non-vested shares
Shares vested (in shares)
Shares reserved for issuance (in shares)
Award Type [Domain]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Significant Accounting Policies
Unaudited Interim Condensed Consolidated Statement of Cash Flows [Abstract]
Unaudited Interim Condensed Consolidated Statement of Other Comprehensive Income / (Loss) [Abstract]
Unaudited Interim Condensed Consolidated Statement of Stockholders' Equity [Abstract]
STOCKHOLDERS' EQUITY
Capital Structure [Abstract]
Warrants outstanding (in shares)
Class of Warrant or Right, Outstanding
Capital Structure
Equity [Text Block]
Subsequent Event Type [Axis]
Subsequent Event [Line Items]
Subsequent Event [Table]
Subsequent Event Type [Domain]
SUPPLEMENTAL CASH FLOW INFORMATION
Total current assets
Assets, Current
Current assets:
Variable Interest Entity [Table]
Variable Interest Entity [Line Items]
RGI [Member]
Variable Interest Entity, Primary Beneficiary [Member]
Weighted average number of common shares outstanding, diluted (in shares)
Weighted average number of common shares outstanding, basic (in shares)
Common Stock [Member]
Vessels, Net
Property, Plant and Equipment Disclosure [Text Block]
Long-Lived Tangible Asset [Domain]
Additions
Addition to vessels, net
Disposals
Property, Plant and Equipment, Disposals
Vessels, Net [Abstract]
Fixed assets:
Property, Plant and Equipment, Net [Abstract]
Preferred Stock [Member]
TOTAL ASSETS
Assets
Interest income
Equity Method Investments [Abstract]
Equity Method Investment, Financial Statement, Reported Amounts [Abstract]
Due to related parties
Due to related parties
Other liabilities, non-current
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Gain on disposal of equity method investment
Equity Method Investment, Realized Gain (Loss) on Disposal
Equity Incentive Plan
Cost [Abstract]
Accumulated Depreciation [Abstract]
Movement in Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment [Roll Forward]
Plan [Member]
Statement [Table]
ASSETS
Assets [Abstract]
Statement [Line Items]
Class of Warrant or Right [Table]
Class of Warrant or Right [Axis]
Class of Warrant or Right [Domain]
Class of Warrant or Right [Line Items]
Class of Stock [Domain]
Warrants [Abstract]
Warrants and Rights Note Disclosure [Abstract]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deferred finance costs
Debt Issuance Costs, Net
Other non-current assets
Earnings / (loss) per Share [Abstract]
Equity Method Investment [Table]
Schedule of Equity Method Investments [Line Items]
Class of Stock [Axis]
Property, Plant and Equipment [Table]
Transfer to "Vessels held for sale"
Property, Plant and Equipment, Transfers and Changes
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Foreign currency translation differences
Long-Lived Tangible Asset [Axis]
Property, Plant and Equipment [Line Items]
Financial Instruments [Abstract]
Total United Maritime Corporation stockholders' equity
Equity, Attributable to Parent
Foreign currency exchange loss, net
Preferred stock, $0.0001 par value; 100,000,000 shares authorized; 40,000 Series B preferred shares issued and outstanding as at June 30, 2026 and December 31, 2025, respectively
Equity Components [Axis]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Equity Component [Domain]
Vessels' acquisition and improvements
Capital Expenditures Incurred but Not yet Paid
Long-Term Debt and Other Financial Liabilities
Long-Term Debt [Text Block]
Repurchase of common stock (Note 12)
Stock Repurchased and Retired During Period, Value
Stock based compensation (Note 16) (in shares)
Repurchase of common stock (Note 12) (in shares)
Repurchase of common stock (in shares)
Stock Repurchased and Retired During Period, Shares
Net income / (loss) attributable to common shareholders, diluted
Net Income (Loss) Available to Common Stockholders, Diluted
Payments of financing and stock issuance costs
Payment of Financing and Stock Issuance Costs
Dividend record date
Dividend payable, date of record
Dividends Payable, Date of Record
Expenses:
Costs and Expenses [Abstract]
Earnings / (loss) per Share
Earnings Per Share [Text Block]
Net income / (loss)
Net income / (loss)
Net income / (loss)
Less: Net income / (loss) attributable to non-controlling interest
Other comprehensive (loss) / income:
Total comprehensive income / (loss)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Less: Comprehensive income / (loss) attributable to non-controlling interest
Balance
Balance
Total stockholders' equity
Equity, Including Portion Attributable to Noncontrolling Interest
Noncontrolling Interest [Member]
United Maritime Corporation
Right-of Use Assets and Finance Lease Liabilities [Abstract]
Commitments and contingencies
Commitments and Contingencies
Dividends on common stock and participating non vested restricted stock awards (Note 12)
Dividends declared
Trade accounts and other payables
Accounts Payable, Current
Accrued liabilities
Accrued Liabilities, Current
Dividends payable
Dividends on common stock and participating non vested restricted stock awards declared but not paid
Dividends Payable, Current
Stock based compensation (Note 16)
Other non-current assets:
Acquisition of RGI [Abstract]
Deferred charges and other investments, non-current
Other income / (expenses), net:
Other Income and Expenses [Abstract]
Cash and Cash Equivalents and Restricted Cash [Abstract]
Basis of Presentation and General Information [Abstract]
Balance (in shares)
Balance (in shares)
Shares, Outstanding
Revenue from Charterers
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Annual Principal Payments
Cash and Cash Equivalents and Restricted Cash
Schedule of Cash and Cash Equivalents [Table Text Block]
Commitments and Contingencies [Abstract]
Financial Instruments [Abstract]
Subsequent Events
Subsequent Events [Text Block]
Financial Instruments
Equity Incentive Plan [Abstract]
Long-Term Debt
Schedule of Debt [Table Text Block]
Significant Accounting Policies [Abstract]
Equity Method Investments [Abstract]
Transactions with Related Parties [Abstract]
Subsequent Events [Abstract]
Financing and stock issuance stocks
Other Significant Noncash Transaction, Value of Consideration Given
Due from related parties
Cash paid during the period for:
Dividend payable date
Dividend payable, date of payment
Earnings / (loss) Per Common Share
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Unrecognized Cost for Non-vested Shares [Abstract]
Statement of Financial Position Location, Balance [Axis]
Dividends [Axis]
Dividends [Domain]
Plan Name [Axis]
Plan Name [Domain]
Award Type [Axis]
Cash and Cash Equivalent [Table]
Cash and Cash Equivalents [Line Items]
Subsequent Event [Member]
Statement of Income Location, Balance [Axis]
Statement of Income Location, Balance [Domain]
Recent Accounting Pronouncements - Not Yet Adopted
Annual Principal Payments [Abstract]
2027
Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months
2028
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two
2029
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three
2030
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four
Related Party Transactions
Recognition period for unrecognized cost for non-vested shares
Number of reportable segments
Purchase obligation
Purchase obligation
Concentration risk percentage
Foreign currency translation differences
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Other comprehensive (loss) / income
Other Comprehensive Income (Loss), Net of Tax
Statement of Financial Position Location, Balance [Domain]
Gain on acquisition of RGI
Variable Interest Entity, Initial Consolidation, Gain (Loss)
Margin on variable rate
Debt Instrument, Basis Spread on Variable Rate
Revenues [Member]
Revenue Benchmark [Member]
Award Date [Axis]
Award Date [Domain]
Release of cumulative translation adjustment of equity method investment
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax
Vessel held for sale
Vessels held for sale
Acquisition of RGI
Variable Interest Entity Disclosure [Text Block]
Warrant exercise price (in dollars per share)
Disposals
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment
Less: Deferred financing costs and debt discounts
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Annual Lease Payments [Abstract]
Voyage Expenses [Abstract]
Disaggregation of Revenue [Abstract]
Income Derived from Time Charters
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Line Items]
Right-of-Use Assets and Finance Lease Liabilities [Abstract]
Right-of use assets
Right-of-use assets
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Vessel revenues from spot charters, net of commissions
Revenue from Contract with Customer, Excluding Assessed Tax
Implicit borrowing rate
Lessee, Lease, Description [Table]
Lessee, Lease, Description [Line Items]
Cash and Cash Equivalents and Restricted Cash [Abstract]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract]
Commitments and Contingencies [Abstract]
Lessor, Operating Lease, Description [Abstract]
Restricted cash
Restricted Cash, Current
Effect of exchange rate changes on cash, cash equivalents and restricted cash
Net decrease in cash and cash equivalents and restricted cash
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Cash and cash equivalents and restricted cash
Cash and cash equivalents and restricted cash at beginning of period
Cash and cash equivalents and restricted cash at end of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Lessor, Lease, Description [Table]
Lessor, Lease, Description [Line Items]
Payments of finance lease liabilities
Finance Lease, Principal Payments
Weighted average implicit rate
Vessel revenues from time charters, net of commissions
Operating Lease, Lease Income
Total
Lessor, Operating Lease, Payment to be Received
Twelve-month period ending June 30, 2028
Lessor, Operating Lease, Payment to be Received, Rolling Year Two
Twelve-month period ending June 30, 2027
Lessor, Operating Lease, Payment to be Received, Next Rolling 12 Months
Future Minimum Contractual Charter Revenue
Amortization of right-of use assets
Present value of finance lease liabilities
Finance Lease, Liability
Finance lease liabilities, current
Finance lease liabilities, current
Less: Discount based on implicit rate
Finance Lease, Liability, Undiscounted Excess Amount
Finance lease liabilities, non-current
Finance Lease, Liability, Noncurrent
Total undiscounted lease payments
Finance Lease, Liability, to be Paid
2027
Finance Lease, Liability, to be Paid, Next Rolling 12 Months
2028
Annual Lease Payments
Interest expense on finance lease liabilities
Interest on finance lease liability
Future Minimum Contractual Charter Revenue [Abstract]
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract]
Right-of Use Assets and Finance Lease Liabilities
Weighted average remaining lease term
Finance Lease, Weighted Average Remaining Lease Term
Term of bareboat charter
Term of bareboat charter
Term of time charter agreements
Grantee Status [Axis]
Grantee Status [Domain]
Certain Service Providers [Member]
Certain Employees of Service Providers [Member]
Share-Based Payment Arrangement, Nonemployee [Member]
Deferred revenue
Total fixed assets
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Term of bareboat charter
Sale Leaseback Transaction, Lease Term
Related Party [Member]
Other Receivable, after Allowance for Credit Loss, Current, Related Party, Type [Extensible Enumeration]
Other Liability, Current, Related Party, Type [Extensible Enumeration]
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Interest and finance costs
Total
Interest Expense, Nonoperating
Cover [Abstract]
Document Type
Amendment Flag
Document Period End Date
Entity Registrant Name
Entity Central Index Key
Country of incorporation
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
The cash outflow for leasehold improvements.
Payments for Leasehold Improvements
Leasehold improvements
The cash outflow associated with the purchase of noncontrolling interest, net of the cash acquired from the purchase.
Payments to Acquire Additional Interest in Subsidiaries, Net of Cash Acquired
Acquisition of a subsidiary, net of cash acquired
Assumed financial obligation in a noncash financing transaction.
Assumed financial obligation, Noncash Financing Transaction
Assumed financial obligation (Note 7)
Noncash financing activities [Abstract]
Noncash financing activities:
The noncash consideration given for modifications made to a leased property.
Noncash Transaction, Leasehold Improvements
Leasehold improvements
The noncash consideration given for right-of-use assets.
Noncash Right-of-Use Assets
Right-of use assets
Noncash investing activities [Abstract]
Noncash investing activities:
Distribution of earnings in the form of cash declared by the board of directors to be distributed to shareholders for the third quarter ending September 30, 2025.
O 2025-Q3 Dividends [Member]
Regular Quarterly Dividend for Q3-2025 [Member]
Distribution of earnings in the form of cash declared by the board of directors to be distributed to shareholders for the fourth quarter ending December 31, 2025.
O 2025-Q4 Dividends [Member]
Regular Quarterly Dividend for Q4-2025 [Member]
Number of shares of securities into which outstanding class of warrant or right may be converted.
Class of Warrant or Right, Outstanding, Shares that can be issued
Shares to be issued upon exercise of remaining warrants (in shares)
Class of security that gives the holder the right to purchase shares of stock in accordance with the terms of the instrument, usually upon payment of a specified amount.
Class A Warrants [Member]
Class A Warrants [Member]
Number of new stock issued upon the exercise of warrants during the period.
Stock Issued During Period, Shares, Warrant Exercise
Shares issued upon exercise of warrants (in shares)
Average cost of shares repurchased and retired during the period.
Stock Repurchased and Retired During Period, Average Cost Per Share
Average price of repurchased shares (in dollars per share)
Common stock buybacks [Abstract]
Amount of unamortized debt discount (premium) and debt issuance costs classified as current.
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Current
Deferred finance costs and debt discounts, current
Amount of unamortized debt discount (premium) and debt issuance costs classified as noncurrent.
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Noncurrent
Deferred finance costs and debt discounts, non-current
Vessel operating expenses.
Vessel Operating Expenses
Vessel operating expenses
Fees paid to third parties for providing general administrative and support services, such as crewing and other technical management, accounting related to vessels and provisions.
Management Fees
Management fees
Amount of deferred income due to lease modification that was not accounted for as a separate contract.
Deferred Income from Lease Modification, Current
Deferred revenue from time charter arrangements treated as lease modification
Amount of ballast bonus payments made by charterers for the ballast trip that are deferred and recognized on a straight line basis over the charter period.
Deferred Revenue from Ballast Bonus Payments
Deferred revenue from ballast bonus payments
Amount of deferred income from leases excluding obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.
Deferred Income from Leases, Current
Deferred revenue from lease agreements
Tabular disclosure of subsidiaries included in the consolidated financial statements.
Subsidiaries in Consolidation [Table Text Block]
Subsidiaries in Consolidation
Wholly-owned subsidiary of the Company, incorporated in Liberia.
Squire Maritime Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Traders Maritime Co. [Member]
Date the vessel was sold or disposed of by the entity.
Date of Sale/Disposal
Date of sale/disposal
Date the vessel was delivered to the entity.
Date of Delivery
Date of delivery
The name of vessel.
Vessel Name
Vessel name
Subsidiaries in Consolidation [Abstract]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Cretansea Maritime Co. [Member]
Cretansea Maritime Co. [Member]
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
Subsidiaries in Consolidation [Line Items]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Oasea Maritime Co. [Member]
Oasea Maritime Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Chrisea Maritime Co. [Member]
Chrisea Maritime Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Duke Maritime Co [Member]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Sea Glorius Shipping Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Minoansea Maritime Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in Liberia.
Good Maritime Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in Liberia.
Synthesea Maritime Co. [Member]
Synthesea Maritime Co. [Member]
Wholly-owned subsidiary of the Company, incorporated in Liberia.
Nisea Maritime Co. [Member]
Company's management company, established in Greece under Greek law.
United Management Corp [Member]
Total number of registered shares of an entity that have been sold or granted to parent entity.
Capital Stock, Shares Issued
Share capital (in shares)
Summarization of information for subsidiaries included in the consolidated financial statements.
Subsidiaries in Consolidation [Table]
Amount of increase in noncontrolling interest from the consolidation of a variable interest entity.
Noncontrolling Interest, Increase from Consolidation of Variable Interest Entity
Acquisition of RGI (Note 9)
Voyage expenses consisting of port, canal and bunker expenses and commission costs that are incurred on time-charter and voyage-charter arrangements.
Voyage Expenses
Voyage expenses
Contract for an unfixed period of time.
Charter for Unfixed Periods [Member]
Unfixed Periods [Member]
A time charter is a contract to charter a vessel for a fixed period at a set daily rate.
Time Charter [Member]
Time Charter [Member]
A spot charter is a contract to carry specific cargo from a load port to a discharge port at a per-day rate or a per-ton carry amount, depending on the agreement.
Spot Charter [Member]
Spot Charter [Member]
In July 2022, the board of directors adopted the 2022 Equity Incentive Plan (the "Plan") which has been amended and restated to increase the aggregate number of common shares reserved for issuance under the Plan. Under the Plan and as amended, the Company's employees, officers, directors and service providers are entitled to receive options to acquire the Company's common shares. Under the Plan, the Company's officers, key employees, directors, consultants and service providers may be granted incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock, unrestricted stock, restricted stock units, and unrestricted stock at the discretion of the compensation committee. of the board of directors.
Equity Incentive Plan 2022 [Member]
2022 Equity Incentive Plan [Member]
Primary financial statement caption encompassing voyage expense.
Voyage Expenses [Member]
Voyage Expenses [Member]
Awards granted on March 9, 2026.
Awarded March 9, 2026 [Member]
Awarded March 9, 2026 [Member]
Tabular disclosure of disaggregation of voyage expenses by revenue source.
Disaggregation of Voyage Expenses by Revenue Source [Table Text Block]
Voyage Expenses
External customer with whom the Company does business.
Customer E [Member]
Customer E [Member]
External customer with whom the Company does business that account for more than 10% of revenues.
Customers Accounting for More than 10 Percent of Revenues [Member]
Customers Accounting for More than 10 Percent of Revenues [Member]
External customer with whom the Company does business.
Customer F [Member]
Customer F [Member]
External customer with whom the Company does business.
Customer C [Member]
Customer C [Member]
External customer with whom the Company does business.
Customer A [Member]
Customer A [Member]
External customer with whom the Company does business.
Customer D [Member]
Customer D [Member]
External customer with whom the Company does business.
Customer B [Member]
Customer B [Member]
External customer with whom the Company does business.
Customer G [Member]
Customer G [Member]
Income from payments made by the charterer to the vessel owner when loading or discharging time exceeds the stipulated time in the voyage charter agreements.
Demurrage Income
Demurrage income
Amount of non-cash amortization of intangible asset (liability) for below market leases.
Amortization of Fair Value of Below Market Time Charter
Amortization of fair value of below market time charter
The entire disclosure for vessel revenue, net and voyage expenses.
Vessel Revenue, Net and Voyage Expenses [Text Block]
Vessel Revenue, net and Voyage Expenses
Vessel Revenue, net and Voyage Expenses [Abstract]
The minimum liquidity requirement to be maintained by the borrower under the sale and leaseback agreement that is restricted as to withdrawal or usage.
Minimum Liquidity Requirements for Sale and Leaseback Agreement
Minimum liquidity
The number of financial institutions where restricted deposits are pledged as collateral regarding credit card balances.
Number of financial institutions where restricted deposits are pledged as collateral regarding credit card balances
The carrying amount of restricted deposits pledged as collateral regarding credit card balances with a financial institution.
Restricted deposits pledged as collateral
Restricted deposits pledged as collateral
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fourth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Four
Thereafter
On March 5, 2026, the Company entered into a sale and leaseback transaction with an affiliate of China Huarong Shipping Financial Leasing Company Ltd. ("Huarong") to finance the purchase option cost of the Nisea under its previous bareboat charter.
Nisea Huarong Sale and Leaseback [Member]
Nisea Huarong Sale and Leaseback [Member]
Amount of purchase obligation at the expiration of the lease in a sale and leaseback transaction.
Sale and Leaseback Transaction, Purchase Obligation
Purchase obligation
Face amount of financial liability at time of sale and leaseback agreement.
Financial Liability, Face Amount
Financing amount
Amount of amortization expense attributable to debt discount (premium) and debt issuance costs excluding amounts associated with related parties.
Amortization of Debt Issuance Costs and Discounts, Excluding Related Party
Amortization of debt finance costs and debt discounts
Amount of liabilities assumed from below market acquired time charter leases.
Liabilities Assumed from Below Market Acquired Time Charter Leases
Liabilities assumed from time charter attached
Below-market acquired time charter
Sales price, net of commission, of long-lived, physical assets used in the normal conduct of business and not intended for resale.
Property, Plant and Equipment, Sales Price
Sales price, net of commission
On April 26, 2023, the Company entered into a sale and leaseback agreement with a subsidiary of Neptune Maritime Leasing Ltd. for the purpose of partly financing the acquisition cost of the Cretansea.
April 2023 Neptune Sale and Leaseback [Member]
Purchase price of vessel at the end of the finance lease after the Company exercises its option to purchase the vessel.
Purchase Price of Vessel at End of Lease
Purchase price of vessel at end of bareboat period
Amount of interest expense incurred on a debt or other obligation to related party classified as nonoperating.
Related Party, Interest Expense
Interest and finance costs-related party
Interest and finance costs-related party
The cash outflow associated with lease prepayments.
Payments for Lease Prepayments
Down payment advanced
Lease prepayments
Daily bareboat rate charged for the vessel to the lessee under a finance lease.
Lessee, Finance Lease, Daily Bareboat Rate
Daily bareboat rate
On May 29, 2026, in connection with the acquisition of the Squireship, the Company entered into a novation agreement with China Huarong Shipping Financial Leasing Company Co., Ltd., as financing lessor, and the seller of the vessel, pursuant to which, upon completion of the acquisition, a subsidiary of United, Squire Maritime Co., assuming all rights and outstanding obligations under the existing bareboat arrangement.
Squireship Huarong Bareboat Charter Arrangement [Member]
Squireship Huarong Bareboat Charter Arrangement [Member]
The number of consecutive, periodic payment installments in which the debt is to be repaid.
Debt Instrument, Number of Consecutive Payment Installments
Number of consecutive payment installments
Term of the interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Debt Instrument, Term of variable rate
Term of variable rate
Number of vessels owning subsidiaries that are borrowers under loan facility.
Number of Vessel Owning Subsidiaries that are Borrowers Under Loan Facility
Number of vessels serving as collateral
Company-owned vessel subject to a first mortgage as collateral to a long-term debt facility.
Vessel Subject to Mortgage [Member]
Vessels that have been financed through sale and leaseback agreements.
Vessels Financed Through Sale and Leaseback Agreements [Member]
Vessels Financed Through Sale and Leaseback Agreements [Member]
A private liability company duly incorporated under the laws of Norway which has a newbuilding contract for the construction of an Energy Construction Vessel ("ECV"), with expected delivery date in May 2027.
Wind Energy Construction SA [Member]
WEC [Member]
Sales price for equity method investment in accordance with share sale and purchase agreement.
Equity Method Investment, Sales Price
Sales price of equity method investment
Fees charged under the commercial management agreement for the commercial management of their vessels, including chartering, monitoring thereof, freight collection, and sale and purchase.
Related Party Transaction, Commercial Management Fees
Commercial services
Fees charges by a related party for any vessel sold on the Company's behalf.
Related Party Transaction, Fees Charged in Relation to Sale Services
Sale of vessel services
Fees paid to related parties for providing a wide range of shipping services such as crew management, technical management, operational employment management, insurance arrangements, provisioning, bunkering, accounting services, general administration and audit support.
Related Party Transaction, Management Fees
Management fees-related party
Management fees-related party
Wholly-owned subsidiary of the Company, incorporated in the Marshall Islands.
Exelixsea Maritime Co. [Member]
Exelixsea Maritime Co. [Member]
Purchase price of long-lived, physical assets used in the normal conduct of business and not intended for resale.
Property, Plant and Equipment, Purchase Price
Purchase price
The cash inflow from payments from related parties for working capital purposes.
Proceeds from Related Party, Working Capital
Payments for working capital purposes
Due to related parties
Fixed management fees paid for arranging (directly or by subcontracting) for the crewing of the vessels, the day-to-day operations, inspections, maintenance, repairs, drydocking, purchasing, insurance and claims handling of vessels.
Related Party Transaction, Fixed Management Fee
Monthly fixed management fee
Wholly-owned subsidiary of the Company and a Management company.
Seanergy Shipmanagement Corp. [Member]
Seanergy Shipmanagement [Member]
A capesize vessel built in 2010 with a cargo-carrying capacity of 181,453 dwt that was acquired on February 12, 2026.
Dukeship [Member]
Dukeship [Member]
Wholly-owned subsidiary of the Company and a Management company.
Seanergy Management Corp. [Member]
Seanergy Management [Member]
Transactions with Related Party [Abstract]
Transactions with Related Parties [Abstract]
Subsequent Event [Abstract]
Subsequent Events [Abstract]
Distribution of earnings in the form of cash declared by the board of directors to be distributed to shareholders for the first quarter ending March 31, 2026.
O 2026-Q1 Dividends [Member]
Regular Quarterly Dividend for Q1-2026 [Member]
Distribution of earnings in the form of cash declared by the board of directors to be distributed to shareholders for the second quarter ending June 30, 2026.
O 2026-Q2 Dividends [Member]
Regular Quarterly Dividend for Q2-2026 [Member]
Tabular disclosure of interest and finance costs.
Interest and Finance Costs [Table Text Block]
Interest and Finance Costs
Majority owned subsidiary, incorporated in Norway.
RGI Marine Holdings AS [Member]
RGI [Member]
The number of shares received in exchange for an outstanding loan, supported by a promissory note, to a related party.
Notes Receivable from Related Party, Shares Received Upon Conversion
Shares received upon conversion of loan (in shares)
Acquisition of Variable Interest Entity [Abstract]
Acquisition of RGI [Abstract]
The amount of (increase) decrease in accumulated depreciation, depletion and amortization from reclassification, impairment, donation, or changes classified as other.
Accumulated Depreciation, Depletion and Amortization of Property, Transfers and Changes
Transfer to "Vessels held for sale"
Watercraft used as a means of transportation on water.
Vessels [Member]
Vessels [Member]
Primary financial statement caption encompassing vessels held for sale.
Vessels Held for Sale [Member]
Vessels Held for Sale [Member]
A capesize vessel built in 2010 with a cargo-carrying capacity of 170,018 dwt that was acquired on March 11, 2026.
Squireship [Member]
Squireship [Member]
Parent company of the entity.
Seanergy Maritime Holdings Corp. [Member]
Seanergy [Member]
A secondhand Panamax dry bulk vessel that was built in 2011 and has a cargo-carrying capacity of 76,361 dwt.
Exelixsea [Member]
Exelixsea [Member]
Capitalized expenditures related to improvements on vessels performance and meeting environmental standards.
Capitalized Expenditures for Improvements on Vessels Performance and Meeting Environmental Standards [Member]
Capitalized Expenditures for Improvements on Vessels Performance and Meeting Environmental Standards [Member]
A secondhand Panamax vessel, the Scarlet Robin, which will be renamed Nisea. and it is expected to be delivered at the end of October 2024.
Nisea [Member]
Nisea [Member]
A secondhand Kamsarmax dry bulk vessel that was built in 2009 and has a cargo-carrying capacity of 81,508 dwt.
Cretansea [Member]
Cretansea [Member]
Gross sales price long-lived, physical assets used in the normal conduct of business and not intended for resale.
Property, Plant and Equipment, Sales Price, Gross
Gross sales price
Cost of vessels, including contract price and any material expenses incurred upon acquisition (initial repairs, improvements and delivery expenses, interest and on-site supervision costs incurred during the construction periods), less accumulated depreciation.
Vessels, net
Vessels, net
Vessels, net
Disclosure of accounting policy for the fair value of below market acquired time charters.
Fair Value of Below Market Acquired Time Charters, Policy [Policy Text Block]
Fair Value of Below Market Acquired Time Charters
The entire disclosure for interest and finance costs.
Interest and Finance Costs [Text Block]
Interest and Finance Costs