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Annual fee for services provided by Costamare Shipping and/ or Costamare Services as at period end

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Annual fee for services provided by Costamare Shipping and/ or Costamare Services chartered in the current period.

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The daily brokerage commission per day on time charters.

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Percentage of fee on committed capital to be invested.

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Fees paid to related parties for providing the company with technical, crewing, bunkering, accounting, provisions, sale, purchase services, as well as general administrative, certain commercial services, director and officer related insurance services.

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Expenses paid to related parties primarily consisting of commissions and fees, which are paid for by the company, regardless of the charter type.

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The total amount hold by a third party manager as working capital security in accordance with the management agreement between the reporting entity and the third party manager.

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The per vessel amount hold by a third party manager as working capital security in accordance with the management agreement between the reporting entity and the third party manager.

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Number of new stock issued during the period.

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Note 4 - Transactions With Related Parties (Details Textual) € in Thousands			1 Months Ended	6 Months Ended		18 Months Ended
	Mar. 29, 2021 USD ($)	Mar. 31, 2020	Mar. 31, 2023 USD ($)	Jun. 30, 2025 USD ($) shares	Jun. 30, 2024 USD ($) shares	Jun. 30, 2025 EUR (€)	Dec. 31, 2024 USD ($)	Jan. 01, 2018
Management Fees Related Parties				$ 14,178,000	$ 14,241,000
Voyage Expenses Related Parties				5,819,000	6,073,000
General Administrative Expenses Related Parties				4,294,000	5,618,000
Costamare Shipping Company SA and Costamare Shipping Services Ltd. [Member]
Management Fee Per Day, Per Vessel				1.02
Management Fee Per Day, Per Vessel Under Bareboat Charter				0.51
Construction Supervisory Fee				$ 840,000
Commission Charged on Charter Hire Agreements				1.25%
Quarterly Fee to Related Parties				$ 667,000
Quarterly Fee to Related Parties, Shares (in shares) \| shares				149,600
Management Fees Related Parties				$ 10,925,000	11,670,000
Amounts Paid to Third Party Managers				2,787,000	3,487,000
Voyage Expenses Related Parties				$ 5,123,000	$ 5,340,000
Stock Issued During Period, Shares, New Issues (in shares) \| shares				299,200	299,200
Working Capital Security							$ 2,325,000
Costamare Shipping Company SA and Costamare Shipping Services Ltd. [Member] \| Accounts Receivable, Net, Noncurrent [Member]
Working Capital Security				$ 1,950,000			1,950,000
Costamare Shipping Company SA and Costamare Shipping Services Ltd. [Member] \| Accounts Receivable, Net [Member]
Working Capital Security							375,000
Costamare Shipping Company SA and Costamare Shipping Services Ltd. [Member] \| General and Administrative Expense [Member]
Officers Compensation Charged, Period End				1,333,000	$ 1,333,000
Fair Value of Shares Issued to Manager				2,835,000	4,156,000
V.Ships Greece Ltd. [Member]
Working Capital Security Per Vessel				75,000
Other Third-party Managers [Member]
Working Capital Security Per Vessel				50,000
Costamare Shipping [Member]
Accounts Receivable, after Allowance for Credit Loss				6,885,000			286,000
Accounts Payable, Current				595,000			133,000
Blue Net Chartering GmbH & Co. KG (Containerships Only) [Member]
Voyage Expenses Related Parties				356,000	364,000
Percentage Ownership								50.00%
Annual Fee to Related Parties \| €						€ 9,413
Annual Fee to Related Parties, Chartered in Current Period \| €						€ 1,281
Vessels Under Time Charter	4
Daily Brokerage Commission on Time Charter	$ 0.165
Blue Net Asia Pte., Ltd. (“BNA”) (Containerships Only) [Member]
Commission Charged on Charter Hire Agreements		1.25%
Voyage Expenses Related Parties				340,000	369,000
Percentage Ownership		50.00%
Vessels Under Time Charter		5
LC LAW Stylianou & Associates LLC [Member] \| Legal Service [Member]
Accounts Payable, Current				0			0
General Administrative Expenses Related Parties				0	3,000
Chairman and Chief Executive Officer, Konstantinos Konstantakopoulos [Member] \| Neptune Global Finance Ltd. (“NGF”) [Member]
Subsidiary, Ownership Percentage, Parent			51.00%
Neptune Global Finance Ltd. (“NGF”) [Member] \| Neptune Maritime Leasing Limited (“NML”) [Member]
Management Fees Related Parties				1,624,000	1,616,000
Accounts Receivable, after Allowance for Credit Loss				3,130,000			806,000
Fee Percentage on Contributed Capital Invested			1.50%
Fee Percentage on Committed Capital to be Invested			0.80%
Neptune Maritime Leasing Limited (“NML”) [Member] \| Neptune Global Finance Ltd. (“NGF”) [Member]
Subsidiary, Ownership Percentage, Noncontrolling Owner			49.00%
Codrus [Member] \| Financial And Strategic Advice [Member]
Accounts Receivable, after Allowance for Credit Loss				0			0
Annual Fee to Related Parties			$ 250,000
Navilands [Member] \| Asset Management Arrangement [Member]
Management Fees Related Parties				1,629,000	$ 953,000
Working Capital Security				1,125,000			1,125,000
Accounts Receivable, after Allowance for Credit Loss				$ 1,629,000			$ 1,667,000