Investments in Affiliates - Navios Europe I and Navios Europe II (Details)
$ in Thousands
3 Months Ended 7 Months Ended 12 Months Ended
Mar. 31, 2017
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 18, 2013
USD ($)
Feb. 18, 2015
USD ($)
Investments In And Advances To Affiliates [Line Items]              
Long-term debt   $ 1,581,308 $ 1,651,095 $ 1,581,308 $ 1,612,890    
Investments in affiliates   381,746 160,071 381,746 344,453    
Portion of the carrying balance of related party loan   16,474 23,008 16,474      
Equity in net earnings of affiliated companies     (202,779) 61,484 57,751    
Proceeds from long-term loans     116,331 0 72,250    
Navios Europe I              
Investments In And Advances To Affiliates [Line Items]              
Difference between carrying amount of investment and underlying equity in net assets of equity method investee   5,386 4,710 5,386   $ 6,763  
Estimated maximum potential loss     18,268 15,763      
Investments in affiliates   6,895 8,198 6,895      
Investments in affiliates   5,497 $ 5,967 5,497   $ 4,750  
Profit Sharing Arrangement     On an ongoing basis, Navios Europe I is required to distribute cash flows (after payment of operating expenses and amounts due pursuant to the terms of the Senior Loans I) according to a defined waterfall calculation.        
Equity in net earnings of affiliated companies     $ 1,303 1,293 $ 831    
Number of vessels acquired           10  
Navios Europe I | Navios Revolving Loans I              
Investments In And Advances To Affiliates [Line Items]              
Portion of the carrying balance of related party loan   8,868 10,070 8,868      
Navios Europe I | Navios Revolving Loans I | Navios Holdings, Navios Acquisition and Navios Partners              
Investments In And Advances To Affiliates [Line Items]              
Line of credit facility maximum borrowing capacity           $ 24,100  
Navios Europe I | 10 vessels | Navios Holdings, Navios Acquisition and Navios Partners              
Investments In And Advances To Affiliates [Line Items]              
Long-term debt           $ 10,000  
Navios Europe II              
Investments In And Advances To Affiliates [Line Items]              
Difference between carrying amount of investment and underlying equity in net assets of equity method investee     7,953       $ 9,419
Estimated maximum potential loss     22,287 15,858      
Investments in affiliates   7,958 7,944 7,958      
Investments in affiliates   $ 6,650 $ 5,894 6,650      
Profit Sharing Arrangement     On an ongoing basis, Navios Europe II is required to distribute cash flows (after payment of operating expenses, amounts due pursuant to the terms of the Senior Loans II) according to a defined waterfall calculation.        
Equity in net earnings of affiliated companies     $ (14) 1,308      
Number of vessels acquired   14          
Navios Europe II | Navios Revolving Loans II              
Investments In And Advances To Affiliates [Line Items]              
Portion of the carrying balance of related party loan   $ 7,900 14,343 7,900      
Navios Europe II | Navios Revolving Loans II | Navios Holdings, Navios Acquisition and Navios Partners              
Investments In And Advances To Affiliates [Line Items]              
Line of credit facility maximum borrowing capacity   $ 43,500   $ 43,500      
Navios Europe II | Navios Revolving Loans II | Navios Holdings, Navios Acquisition and Navios Partners | Subsequent event              
Investments In And Advances To Affiliates [Line Items]              
Line of Credit Facility, Increase $ 14,000            
Navios Europe II | 14 Vessels | Navios Holdings, Navios Acquisition and Navios Partners              
Investments In And Advances To Affiliates [Line Items]              
Long-term debt     $ 14,000