Vessels, Port Terminal and Other Fixed Assets, Net (Table) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property Plant And Equipment [Line Items]      
Balance $ 1,823,961    
Transfers / Restructure of capital lease 0 $ (210) $ 0
Balance 1,821,101 1,823,961  
Cost      
Property Plant And Equipment [Line Items]      
Balance 2,434,639 2,425,931 2,201,955
Additions 65,154 8,918 224,184
Transfers / Restructure of capital lease 29,695 (210)  
Write-off     (208)
Balance 2,529,488 2,434,639 2,425,931
Accumulated Depreciation      
Property Plant And Equipment [Line Items]      
Balance (610,678) (514,788) (424,498)
Additions (97,709) (95,890) (90,451)
Write-off     161
Balance (708,387) (610,678) (514,788)
Net Book Value      
Property Plant And Equipment [Line Items]      
Balance 1,823,961 1,911,143 1,777,457
Additions     133,733
Additions (32,555) (86,972)  
Transfers / Restructure of capital lease 29,695 (210)  
Write-off     (47)
Balance 1,821,101 1,823,961 1,911,143
Vessels | Cost      
Property Plant And Equipment [Line Items]      
Balance 1,841,140 1,841,140 1,717,599
Additions 60,115   123,541
Transfers / Restructure of capital lease 29,695    
Balance 1,930,950 1,841,140 1,841,140
Vessels | Accumulated Depreciation      
Property Plant And Equipment [Line Items]      
Balance (447,688) (376,794) (308,461)
Additions (73,847) (70,894) (68,333)
Balance (521,535) (447,688) (376,794)
Vessels | Net Book Value      
Property Plant And Equipment [Line Items]      
Balance 1,393,452 1,464,346 1,409,138
Additions     55,208
Additions (13,732) (70,894)  
Transfers / Restructure of capital lease 29,695    
Balance 1,409,415 1,393,452 1,464,346
Port Terminals (Navios Logistics) | Cost      
Property Plant And Equipment [Line Items]      
Balance 108,686 106,399 103,030
Additions 2,051 2,287 3,369
Transfers / Restructure of capital lease (1,513)    
Balance 109,224 108,686 106,399
Port Terminals (Navios Logistics) | Accumulated Depreciation      
Property Plant And Equipment [Line Items]      
Balance (23,898) (20,467) (17,082)
Additions (3,493) (3,431) (3,385)
Balance (27,391) (23,898) (20,467)
Port Terminals (Navios Logistics) | Net Book Value      
Property Plant And Equipment [Line Items]      
Balance 84,788 85,932 85,948
Additions (1,442) (1,144) (16)
Transfers / Restructure of capital lease (1,513)    
Balance 81,833 84,788 85,932
Tanker vessels, barges and push boats (Navios Logistics) | Cost      
Property Plant And Equipment [Line Items]      
Balance 470,944 464,966 368,626
Additions 738 6,188 96,387
Transfers / Restructure of capital lease 3,696 (210)  
Write-off     (47)
Balance 475,378 470,944 464,966
Tanker vessels, barges and push boats (Navios Logistics) | Accumulated Depreciation      
Property Plant And Equipment [Line Items]      
Balance (131,144) (111,137) (93,782)
Additions (18,894) (20,007) (17,355)
Balance (150,038) (131,144) (111,137)
Tanker vessels, barges and push boats (Navios Logistics) | Net Book Value      
Property Plant And Equipment [Line Items]      
Balance 339,800 353,829 274,844
Additions     79,032
Additions (18,156) (13,819)  
Transfers / Restructure of capital lease 3,696 (210)  
Write-off     (47)
Balance 325,340 339,800 353,829
Other fixed assets | Cost      
Property Plant And Equipment [Line Items]      
Balance 13,869 13,426 12,700
Additions 2,250 443 887
Transfers / Restructure of capital lease (2,183)    
Write-off     (161)
Balance 13,936 13,869 13,426
Other fixed assets | Accumulated Depreciation      
Property Plant And Equipment [Line Items]      
Balance (7,948) (6,390) (5,173)
Additions (1,475) (1,558) (1,378)
Write-off     161
Balance (9,423) (7,948) (6,390)
Other fixed assets | Net Book Value      
Property Plant And Equipment [Line Items]      
Balance 5,921 7,036 7,527
Additions 775    
Additions   (1,115) (491)
Transfers / Restructure of capital lease (2,183)    
Balance $ 4,513 $ 5,921 $ 7,036