Summary of Significant Accounting Policies (Details Narrative)
12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
Dec. 31, 2019
USD ($)
$ / shares
Mar. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Jul. 31, 2021
USD ($)
Document Accounting Standard U.S. GAAP            
Assets, Current $ 229,447,000 $ 194,857,000          
Current liabilities, excluding operating lease liabilities 442,701,000            
Working capital deficit 213,254,000            
Long-term Debt, Current Maturities 307,451,000 374,191,000          
Senior Notes 1,101,931,000 1,263,566,000          
Restricted Cash and Cash Equivalents, Current 84,260,000 $ 16,303,000          
Annual growth factor management fees every second year   3.00%          
Amortization of deferred dry dock and special survey costs 11,084,000 $ 10,255,000 $ 11,067,000        
Amortization and write-off of deferred financing 8,870,000 7,863,000 8,242,000        
Goodwill 160,336,000 160,336,000          
Foreign Currency Transaction Gain (Loss), Realized 2,630,000 546,000 (967,000)        
Provision for losses on vessels time charter $ 0 $ 0          
Number of Reportable Segments 2 3          
Income Tax Expense (Benefit) $ 4,817,000 $ 2,052,000 1,475,000        
Payments of Ordinary Dividends, Common Stock     0        
Payments of Ordinary Dividends, Preferred Stock and Preference Stock     $ 0        
Preferred Stock, Par or Stated Value Per Share | $ / shares $ 0.0001 $ 0.0001          
Convertible Preferred Stock [Member]              
Preferred Stock, Par or Stated Value Per Share | $ / shares $ 0.0001            
Preferred Stock, Dividend Rate, Percentage 2.00%            
Preferred Stock, Convertible, Terms Five years after the issuance date, 30.0% of the then-outstanding shares of Preferred Stock automatically converted into shares of common stock at a conversion price equal to $10.00 per share of common stock with the remaining balance of the then-outstanding shares of Preferred Stock converted into shares of common stock under the same terms 10 years after their issuance date.            
Preferred Stock, Redemption Price Per Share | $ / shares     $ 10        
American Depositary Shares Series G [Member]              
Preferred Stock, Dividend Rate, Percentage 8.75%            
Number of shares | shares 2,000,000            
Preferred Stock, Liquidation Preference Per Share | $ / shares $ 2,500,000            
Preferred Stock, Redemption Price Per Share | $ / shares $ 25            
American Depositary Shares Series H [Member]              
Preferred Stock, Dividend Rate, Percentage 8.625%            
Number of shares | shares 4,800,000            
Preferred Stock, Liquidation Preference Per Share | $ / shares $ 2,500,000            
Preferred Stock, Redemption Price Per Share | $ / shares $ 25            
American Depositary Shares Series G and H [Member]              
Preferred Stock, Redemption Terms Each of the shares represents 1/100th of a share of the Series G, with a liquidation preference of $2,500.00 per share ($25.00 per American Depositary Share).            
Argentina [Member]              
Effective Income Tax Rate Reconciliation, Percent   35.00%          
Income Tax Expense (Benefit) $ 2,112   $ 208        
Severance and retirement compensation plan [Member]              
Description of defined contribution pension and other postretirement plans The amount of compensation was based on the number of years of service and the amount of remuneration at the date of dismissal or retirement up to a maximum of two years’ salary. If the employees remained in the employment of the Company until normal retirement age, they were entitled to retirement compensation equal to 40% of the compensation amount that would be payable if they were dismissed at that time. The number of employees that would remain with the Company until retirement age was not known.            
Defined Benefit Plan, Funded Percentage 40.00%            
Dry bulk vessels [Member]              
Restricted Cash and Cash Equivalents, Current $ 84,260,000 $ 16,303,000 736,000        
Goodwill 56,240,000 56,240,000 56,240,000        
Logistics Business [Member]              
Restricted Cash and Cash Equivalents, Current 0 0 0        
Goodwill $ 104,096,000 104,096,000 $ 104,096,000        
Navios Holdings [Member] | Trade Names [Member]              
Finite lived intangible assets amortization method straight-line            
Finite-Lived Intangible Asset, Useful Life 32 years            
Navios Logistics [Member] | Trade Names [Member]              
Finite lived intangible assets amortization method     straight-line        
Finite-Lived Intangible Asset, Useful Life     10 years        
Navios Logistics [Member] | Customer Relationships [Member]              
Finite lived intangible assets amortization method straight-line            
Continuing Operations [Member]              
Amortization and write-off of deferred financing $ 8,870,000 7,863,000 $ 7,746,000        
Navios Holdings [Member]              
Annual growth factor management fees every second year 3.00%            
Utilization rate of fleet 99.30%            
Vessels [Member]              
Scrap rate $ 340,000            
Interest Costs Capitalized $ 1,062,000 986,000 1,960,000        
Dry bulk vessels [Member]              
Property, Plant and Equipment, Useful Life 25 years            
Two dry bulk vessels held and used [Member] | Navios Holdings [Member]              
Impairment loss   52,820,000 84,584,000        
Two tanker vessels held and used [Member] | Navios Logistics [Member]              
Impairment loss $ 21,966,000 0 0        
Chartered-in vessels [Member]              
Impairment loss 0 1,361,000 38,636,000        
Retention Accounts [Member]              
Restricted Cash and Cash Equivalents, Current 0 684,000          
Amounts Held As Security [Member]              
Restricted Cash and Cash Equivalents, Current $ 10,000 10,000          
Navios Partners and its subsidiaries [Member]              
Economic rights 10.30%            
Navios Acquisition and its subsidiaries [Member]              
Economic rights 6.90%            
Navios Containers and its subsidiaries [Member]              
Economic rights 3.90%            
Navios Europe I and its subsidiaries [Member]              
Economic rights 47.50%            
Navios Europe II and its subsidiaries [Member]              
Economic rights 47.50%            
Minimum [Member] | Ocean-going vessels [Member]              
Interval between vessel drydockings / special surveys 30 months            
Minimum [Member] | Pushboats and barges [Member]              
Interval between vessel drydockings / special surveys 72 months            
Minimum [Member] | Affiliate Companies [Member]              
Voting rights 20.00%            
Maximum [Member] | Ocean-going vessels [Member]              
Interval between vessel drydockings / special surveys 60 months            
Maximum [Member] | Pushboats and barges [Member]              
Interval between vessel drydockings / special surveys 96 months            
Maximum [Member] | Affiliate Companies [Member]              
Voting rights 50.00%            
Navios Logistics [Member]              
Ownership percentage of Navios Holdings 63.80%            
Impairment Test [Member] | Logistics Business [Member]              
Goodwill $ 104,096,000            
U.S. Retirement Savings Plan [Member] | Foreign Plan [Member]              
Description of defined contribution pension and other postretirement plans The Company sponsored a 401(k) retirement savings plan, which was categorized as a defined contribution plan. The plan was available to full time employees who met the plan’s eligibility requirements. The plan permitted employees to make contributions up to 15% of their annual salary with the Company matching up to the first 6%. The Company made monthly contributions (matching contributions) to the plan based on amounts contributed by employees. Subsequent to making the matching contributions, the Company had no further obligations. The Company might make an additional discretionary contribution annually if such a contribution was authorized by the Board of Directors. The plan was administered by an independent professional firm that specialized in providing such services.            
Five years after the issuance date [Member] | Convertible Preferred Stock [Member]              
Percentage of preferred stock converted 30.00%            
Convertible Preferred Stock Share Price | $ / shares $ 10            
After the third anniversary of the issuance date [Member] | Convertible Preferred Stock [Member]              
Convertible Preferred Stock Share Price | $ / shares $ 14            
Number of consecutive business days 10            
After the third anniversary of the issuance date [Member] | Minimum [Member] | Convertible Preferred Stock [Member]              
Share Price | $ / shares $ 20            
At any time following the issuance date and prior to the final conversion date [Member] | Convertible Preferred Stock [Member]              
Convertible Preferred Stock Share Price | $ / shares $ 14            
2022 Notes [Member]              
Long-term Debt, Current Maturities $ 164,891,000            
Debt Instrument, Interest Rate, Stated Percentage 7.375%            
Maturity date January 2022            
Debt Instrument, Repurchased Face Amount $ 21,356,000 20,782,000 $ 81,235,000        
Extinguishment of Debt, Amount $ 21,356,000            
Repayment date January 2022            
Repayments of Debt $ 455,566,000            
Senior Secured 2022 Notes [Member]              
Long-term Debt, Current Maturities $ 105,000,000            
Debt Instrument, Interest Rate, Stated Percentage 11.25%            
Maturity date August 2022            
Debt Instrument, Repurchased Face Amount $ 150,000,000            
Number of notices of redemption 4            
Senior Notes $ 155,000,000            
Notes Payable $ 130,000,000            
Senior Secured 2022 Notes [Member] | First Notice [Member]              
Debt Instrument, Repurchased Face Amount             $ 100,000,000
Senior Secured 2022 Notes [Member] | Second Notice [Member]              
Debt Instrument, Repurchased Face Amount           $ 20,000,000  
Senior Secured 2022 Notes [Member] | Third Notice [Member]              
Debt Instrument, Repurchased Face Amount           $ 20,000,000  
Senior Secured 2022 Notes [Member] | Fourth Notice [Member]              
Debt Instrument, Repurchased Face Amount         $ 10,000,000    
Senior Secured 2022 Notes [Member] | Fifth Notice [Member]              
Debt Instrument, Repurchased Face Amount       $ 25,000,000      
Redemption date March 30, 2022            
NSM I and NSM II [Member]              
Proceeds from Lines of Credit $ 150,000,000            
Credit Agricole CIB and BNP Paribas [Member]              
Proceeds from Lines of Credit 105,000,000            
Hamburg Commercial Bank AG [Member]              
Proceeds from Lines of Credit 101,750,000            
Sale And Leaseback Agreements $68,000 [Member]              
Proceeds from Lines of Credit 77,000,000            
Navios Lumen, Navios Stellar and Navios Phoenix [Member]              
Restricted Cash and Cash Equivalents, Current $ 84,250,000            
Navios Northern Star and Navios Amitie [Member]              
Restricted Cash and Cash Equivalents, Current   $ 15,609,000          
NSM [Member] | Management Agreement [Member]              
Termination date of agreement August 29, 2024            
NSM [Member] | Chartered-in vessels [Member] | Management Agreement [Member]              
Daily management fee $ 30.00            
NSM [Member] | Until August 2021 [Member] | Owned Vessels [Member] | Management Agreement [Member]              
Daily management fee 3,700            
NSM [Member] | Until August 2022 [Member] | Owned Vessels [Member] | Management Agreement [Member]              
Daily management fee $ 3,800            
NSM [Member] | After two years [Member] | Vessels Owned [Member] | Management Agreement [Member]              
Rate of annual increase in management fees 3.00%