Other Financial Information - Balance Sheet (Table) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Current assets [Abstract]        
Cash and cash equivalents $ 130,208 $ 135,992 $ 140,529 $ 163,412
Restricted cash 4,462 5,386 2,671  
Accounts receivable, net 52,611 65,829    
Due from affiliate companies 375 8,548    
Total current assets 239,572 273,140    
Vessels, port terminals and other fixed assets, net 1,889,671 1,821,101    
Deposits for vessels, port terminals and other fixed assets 27,119 136,891    
Investments in affiliates 189,195 160,071 388,772  
Long-term receivable from affiliate companies 0 11,105    
Loan receivable from affiliate companies 28,727 23,008    
Total non-current assets 2,456,868 2,479,755    
Total assets 2,696,440 2,752,895 3,001,695  
Current liabilities        
Accounts payable 71,625 85,538    
Accrued expenses and other liabilities 94,590 91,749    
Deferred income and cash received in advance 12,377 9,183    
Due to affiliate companies 27,457 32,847    
Current portion of capital lease obligations 0 2,639    
Current portion of long-term debt 30,347 29,827    
Total current liabilities 236,396 251,783    
Senior and ship mortgage notes, net of discount 1,298,452 1,296,537    
Loan payable to affiliate company 52,491 49,876    
Capital lease obligations, net of current portion 0 14,978    
Other long-term liabilities and deferred income 45,205 43,388    
Long term payable to affiliate companies 68,491 6,399    
Deferred tax liability 10,706 11,526    
Total non-current liabilities 1,740,325 1,697,559    
Total liabilities 1,976,721 1,949,342    
Noncontrolling interest 125,781 125,266    
Total Navios Holdings' stockholders' equity 593,938 678,287    
Total liabilities and stockholders' equity 2,696,440 2,752,895    
Navios Maritime Holdings Inc. Issuer        
Current assets [Abstract]        
Cash and cash equivalents 6,933 15,875 14,189 34,152
Due from affiliate companies 1,919 2,362    
Total current assets 8,852 18,237    
Investments in subsidiaries 1,642,742 1,641,863    
Investments in affiliates 164,277 137,218    
Goodwill and other intangibles 82,539 83,933    
Total non-current assets 1,889,558 1,863,014    
Total assets 1,898,410 1,881,251    
Current liabilities        
Accounts payable 2,419 892    
Accrued expenses and other liabilities 31,291 32,025    
Intercompany payables 288,526 191,814    
Total current liabilities 322,236 224,731    
Senior and ship mortgage notes, net of discount 929,745      
Long-term debt, net of current portion   928,357    
Loan payable to affiliate company 52,491 49,876    
Total non-current liabilities 982,236 978,233    
Total liabilities 1,304,472 1,202,964    
Total Navios Holdings' stockholders' equity 593,938 678,287    
Total liabilities and stockholders' equity 1,898,410 1,881,251    
Guarantor Subsidiaries        
Current assets [Abstract]        
Cash and cash equivalents 60,375 54,935 54,033 47,753
Restricted cash 4,462 2,486    
Accounts receivable, net 32,220 32,916    
Intercompany receivables 217,438 117,596    
Due from affiliate companies   6,186    
Prepaid expenses and other current assets 37,731 39,778    
Total current assets 352,226 253,897    
Vessels, port terminals and other fixed assets, net 1,355,708 1,411,612    
Investments in subsidiaries 293,117 292,209    
Investments in affiliates 11,443 11,978    
Long-term receivable from affiliate companies   11,105    
Loan receivable from affiliate companies 28,727 23,008    
Other long-term assets 17,243 17,877    
Goodwill and other intangibles 35,249 35,571    
Total non-current assets 1,741,487 1,803,360    
Total assets 2,093,713 2,057,257    
Current liabilities        
Accounts payable 46,128 54,731    
Accrued expenses and other liabilities 47,096 43,823    
Deferred income and cash received in advance 7,169 4,666    
Due to affiliate companies 29,001 32,847    
Current portion of long-term debt 20,851 23,476    
Total current liabilities 150,245 159,543    
Long-term debt, net of current portion 202,304 221,437    
Other long-term liabilities and deferred income 43,743 41,857    
Long term payable to affiliate companies 68,491 6,399    
Total non-current liabilities 314,538 269,693    
Total liabilities 464,783 429,236    
Total Navios Holdings' stockholders' equity 1,628,930 1,628,021    
Total liabilities and stockholders' equity 2,093,713 2,057,257    
Non Guarantor Subsidiaries        
Current assets [Abstract]        
Cash and cash equivalents 62,900 65,182 72,307 81,507
Restricted cash   2,900    
Accounts receivable, net 20,391 32,913    
Intercompany receivables 71,088 74,218    
Prepaid expenses and other current assets 14,185 17,607    
Total current assets 168,564 192,820    
Vessels, port terminals and other fixed assets, net 533,963 409,489    
Deposits for vessels, port terminals and other fixed assets 27,119 136,891    
Investments in affiliates 13,475 10,875    
Other long-term assets 21,207 22,551    
Goodwill and other intangibles 165,918 167,647    
Total non-current assets 761,682 747,453    
Total assets 930,246 940,273    
Current liabilities        
Accounts payable 23,078 29,915    
Accrued expenses and other liabilities 16,203 15,901    
Deferred income and cash received in advance 5,208 4,517    
Current portion of capital lease obligations 0 2,639    
Current portion of long-term debt 9,496 6,351    
Total current liabilities 53,985 59,323    
Senior and ship mortgage notes, net of discount 368,707      
Long-term debt, net of current portion 62,676 421,598    
Capital lease obligations, net of current portion   14,978    
Other long-term liabilities and deferred income 1,462 1,531    
Deferred tax liability 10,706 11,526    
Total non-current liabilities 443,551 449,633    
Total liabilities 497,536 508,956    
Noncontrolling interest 125,781 125,266    
Total Navios Holdings' stockholders' equity 306,929 306,051    
Total liabilities and stockholders' equity 930,246 940,273    
Eliminations        
Current assets [Abstract]        
Intercompany receivables (288,526) (191,814)    
Due from affiliate companies (1,544)      
Total current assets (290,070) (191,814)    
Investments in subsidiaries (1,935,859) (1,934,072)    
Total non-current assets (1,935,859) (1,934,072)    
Total assets (2,225,929) (2,125,886)    
Current liabilities        
Intercompany payables (288,526) (191,814)    
Due to affiliate companies (1,544)      
Total current liabilities (290,070) (191,814)    
Total liabilities (290,070) (191,814)    
Total Navios Holdings' stockholders' equity (1,935,859) (1,934,072)    
Total liabilities and stockholders' equity (2,225,929) (2,125,886)    
Total        
Current assets [Abstract]        
Cash and cash equivalents 130,208 135,992 $ 140,529 $ 163,412
Restricted cash 4,462 5,386    
Accounts receivable, net 52,611 65,829    
Intercompany receivables 0 0    
Due from affiliate companies 375 8,548    
Prepaid expenses and other current assets 51,916 57,385    
Total current assets 239,572 273,140    
Vessels, port terminals and other fixed assets, net 1,889,671 1,821,101    
Deposits for vessels, port terminals and other fixed assets 27,119 136,891    
Investments in subsidiaries 0 0    
Investments in affiliates 189,195 160,071    
Long-term receivable from affiliate companies   11,105    
Loan receivable from affiliate companies 28,727 23,008    
Other long-term assets 38,450 40,428    
Goodwill and other intangibles 283,706 287,151    
Total non-current assets 2,456,868 2,479,755    
Total assets 2,696,440 2,752,895    
Current liabilities        
Accounts payable 71,625 85,538    
Accrued expenses and other liabilities 94,590 91,749    
Deferred income and cash received in advance 12,377 9,183    
Intercompany payables 0      
Due to affiliate companies 27,457 32,847    
Current portion of capital lease obligations 0 2,639    
Current portion of long-term debt 30,347 29,827    
Total current liabilities 236,396 251,783    
Senior and ship mortgage notes, net of discount 1,298,452      
Long-term debt, net of current portion 264,980 1,571,392    
Loan payable to affiliate company 52,491 49,876    
Capital lease obligations, net of current portion   14,978    
Other long-term liabilities and deferred income 45,205 43,388    
Long term payable to affiliate companies 68,491 6,399    
Deferred tax liability 10,706 11,526    
Total non-current liabilities 1,740,325 1,697,559    
Total liabilities 1,976,721 1,949,342    
Noncontrolling interest 125,781 125,266    
Total Navios Holdings' stockholders' equity 593,938 678,287    
Total liabilities and stockholders' equity $ 2,696,440 $ 2,752,895