Refers to the estimated maximum potential loss.

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The number of vessels acquired by the company.

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Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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Face (par) amount of debt instrument at time of issuance.

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Amount, after accumulated amortization, of debt discount.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available.

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

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The number of limited partner units issued.

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The number of limited partner units outstanding.

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Amount of increase (decrease) of the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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Fair value portion of contractual obligation to pay money on demand or on fixed or determinable dates.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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

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Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Investment In Navios Europe I, Navios Europe II and Navios Containers (Details) $ / shares in Units, $ in Thousands	3 Months Ended	5 Months Ended	8 Months Ended	10 Months Ended	12 Months Ended
	Mar. 31, 2017 USD ($)	Jun. 08, 2017 USD ($) $ / shares shares	Aug. 29, 2017 USD ($) $ / shares shares	Nov. 09, 2017 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($)	May 25, 2017	Feb. 18, 2015 USD ($)	Dec. 18, 2013 USD ($)	Oct. 09, 2013
Proceeds from long-term debt					$ 514,703	$ 29,000	$ 79,819
Debt Instrument Unamortized Discount					10,824	1,471
Long- term debt					493,463	523,776
Investment in affiliates					52,122	1,257
Portion of the carrying balance of related party loan					11,706	2,422
Investment income					3,277	541	222
Investment income / (loss)					$ 866	$ 0	$ 0
Number of units received \| shares					147,797,720	83,323,911
Formation of Navios Containers					$ 17,323
Common units outstanding \| shares					147,797,720	83,323,911
Navios Europe I
Ownership percentage					5.00%						5.00%
Number of vessels acquired										10
Long- term debt					$ 10,000
Estimated maximum potential loss					$ 1,705	$ 1,390
Navios Europe II
Ownership percentage					5.00%				5.00%
Number of vessels acquired							14
Cash purchase price							$ 145,550
Estimated maximum potential loss					$ 10,472	1,837
Navios Holdings
Common units outstanding \| shares					28,421,233
Navios Revolving Loans I \| Navios Europe I
Portion of the carrying balance of related party loan					$ 1,205	750
Navios Revolvings Loans II \| Navios Europe II
Portion of the carrying balance of related party loan					9,772	1,221
Navios Term Loans I \| Navios Europe I
Investment in affiliates					500
Navios Term Loans II \| Navios Europe II
Investment in affiliates					700
Junior Loan II \| Navios Europe II
Debt instrument face amount							182,150
Debt instrument fair value							99,147
Senior Loans II \| Navios Europe II
Proceeds from long-term debt							131,550
Debt Instrument Unamortized Discount							3,375
Navios Holdings \| Navios Europe I
Ownership percentage											47.50%
Navios Holdings \| Navios Europe II
Ownership percentage									47.50%
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans I \| Navios Europe I
Revolving loan facility maximum borrowing capacity										$ 24,100
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolvings Loans II \| Navios Europe II
Revolving loan facility maximum borrowing capacity									$ 43,500
Increase in available amount of loan facility	$ 14,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans I \| Navios Europe I
Long- term debt					10,000					$ 10,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans II \| Navios Europe II
Long- term debt							$ 14,000
Navios Acquisitions \| Navios Europe I
Ownership percentage											47.50%
Navios Acquisitions \| Navios Europe II
Ownership percentage									47.50%
Navios Europe I
Investment in affiliates					500	640
Navios Europe II
Investment in affiliates					700	616
Navios Containers
Ownership percentage			39.90%
Investment in affiliates					$ 50,922	0
Sale of Stock, Percentage of Ownership after Transaction					33.70%
Common units outstanding \| shares					9,818,182
Market value of the investment					$ 57,566
Navios Containers \| Navios Holdings
Sale of Stock, Percentage of Ownership after Transaction					3.40%
Common units outstanding \| shares					1,000,000
Private Placement \| Navios Containers
Sale Of Stock Number Of Shares Issued In Transaction \| shares		10,057,645	10,000,000	9,090,909
Proceeds from Issuance of Private Placement		$ 50,288	$ 50,000	$ 50,000
Sale of Stock, Price Per Share \| $ / shares		$ 5	$ 5	$ 5.5
Private Placement \| Navios Holdings \| Navios Containers
Formation of Navios Containers		$ 5,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		9.90%
Private Placement \| Navios Containers
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent		$ 30,000	$ 10,000	$ 10,000
Number of units received \| shares		6,000,000	2,000,000	1,818,182
Sale of Stock, Percentage of Ownership after Transaction		59.70%
Private Placement \| Navios Containers \| Navios Holdings
Number of units received \| shares		1,000,000
Warrants \| Navios Containers
Sale of Stock, Percentage of Ownership after Transaction		6.80%	6.80%
Fair Value Assumptions, Expected Term		5 years	5 years
Warrants \| Navios Holdings \| Navios Containers
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		1.70%	1.70%
Fair Value Assumptions, Expected Term		5 years	5 years
Warrants \| Navios Containers
Sale of Stock, Percentage of Ownership after Transaction				6.80%	6.80%
Fair Value Assumptions, Expected Term				5 years	5 years
Warrants \| Navios Containers \| Navios Holdings
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners					1.70%
Fair Value Assumptions, Expected Term					5 years
Within caption "Other Income" \| Navios Europe I
Investment income / (loss)					$ (140)	74
Within caption "Other Income" \| Navios Europe II
Investment income / (loss)					84	$ (133)
With caption "Equity in net earnings of affiliated companies" \| Navios Containers
Investment income					$ 922
Navios Containers Vessels
Number of vessels acquired								5
Navios Containers Vessels \| Navios Containers
Number of vessels acquired		5
Navios Containers Vessels \| Private Placement \| Navios Containers
Proceeds from Issuance of Private Placement		$ 40,000
Navios Containers Vessels \| Private Placement \| Navios Holdings
Sale of Stock, Percentage of Ownership after Transaction					5.00%