Other Financial Information - Balance Sheet (Table) (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Dec. 31, 2013
Current assets        
Cash and cash equivalents $ 180,366 $ 247,556 $ 232,435 $ 187,831
Restricted cash 906 2,564 2,631  
Accounts receivable, net 50,981 85,581    
Due from affiliate companies 17,799 27,196    
Total current assets 291,526 417,131    
Vessels, port terminals and other fixed assets, net 1,869,694 1,911,143    
Deposits for vessel acquisitions 51,990 45,365    
Investment in available-for-sale securities 6,261 6,701    
Investment in affiliates 371,405 344,453 340,375  
Long-term receivable from affiliate companies 0 9,625    
Loan receivable from affiliate companies 11,464 7,791    
Total non-current assets 2,693,658 2,710,566    
Total assets 2,985,184 3,127,697 3,077,037  
Current liabilities        
Accounts payable 34,773 53,837    
Accrued expenses and other liabilities 94,815 107,320    
Deferred income and cash received in advance 6,336 12,445    
Due to affiliate company 3,930 0    
Current portion of capital lease obligations 2,886 1,449    
Current portion of long-term debt 8,100 23,283    
Total current liabilities 150,840 198,334    
Capital lease obligations, net of current portion 18,555 20,911    
Unfavorable lease terms 14,756 22,141    
Other long-term liabilities and deferred income 14,874 17,459    
Deferred tax liability 11,364 12,735    
Total non-current liabilities 1,635,472 1,662,853    
Total liabilities 1,786,312 1,861,187    
Noncontrolling interest 117,251 113,547    
Total Navios Holdings stockholders' equity 1,081,621 1,152,963    
Total liabilities and stockholders' equity 2,985,184 3,127,697    
Navios Maritime Holdings Inc. Issuer        
Current assets        
Cash and cash equivalents 32,017 98,539 47,341 33,769
Intercompany receivables 42,525 23,567    
Due from affiliate companies 4,702 4,638    
Prepaid expenses and other current assets 13 2    
Total current assets 79,257 126,746    
Investments in subsidiaries 1,628,773 1,622,239    
Investment in affiliates 346,884 $ 331,130    
Other long-term assets        
Goodwill and other intangibles 88,168 $ 89,562    
Total non-current assets 2,063,825 2,042,931    
Total assets 2,143,082 2,169,677    
Current liabilities        
Accounts payable 947 591    
Accrued expenses and other liabilities 32,952 33,099    
Intercompany payables 45,242      
Total current liabilities 79,141 33,690    
Long-term debt, net of current portion 982,320 983,024    
Total non-current liabilities 982,320 983,024    
Total liabilities 1,061,461 1,016,714    
Total Navios Holdings stockholders' equity 1,081,621 1,152,963    
Total liabilities and stockholders' equity 2,143,082 2,169,677    
Guarantor Subsidiaries        
Current assets        
Cash and cash equivalents 76,329 77,085 68,707 67,492
Restricted cash 906 2,564    
Accounts receivable, net 13,895 56,265    
Due from affiliate companies 13,097 22,558    
Prepaid expenses and other current assets 24,147 31,179    
Total current assets 128,374 189,651    
Vessels, port terminals and other fixed assets, net 1,431,760 1,467,518    
Deposits for vessel acquisitions 24,290 22,140    
Investments in subsidiaries 278,066 271,532    
Investment in available-for-sale securities 6,261 6,701    
Investment in affiliates 11,297 548    
Long-term receivable from affiliate companies   9,625    
Loan receivable from affiliate companies 11,464 7,791    
Other long-term assets 18,947 6,920    
Goodwill and other intangibles 79,537 85,273    
Total non-current assets 1,861,622 1,878,048    
Total assets 1,989,996 2,067,699    
Current liabilities        
Accounts payable 2,189 18,399    
Accrued expenses and other liabilities 35,886 49,363    
Deferred income and cash received in advance 1,981 6,263    
Intercompany payables 68,601 93,226    
Due to affiliate company 3,930      
Current portion of long-term debt 8,031 23,214    
Total current liabilities 120,618 190,465    
Long-term debt, net of current portion 226,544 231,193    
Unfavorable lease terms 14,756 22,141    
Other long-term liabilities and deferred income 13,808 14,574    
Total non-current liabilities 255,108 267,908    
Total liabilities 375,726 458,373    
Total Navios Holdings stockholders' equity 1,614,271 1,609,326    
Total liabilities and stockholders' equity 1,989,997 2,067,699    
Non Guarantor Subsidiaries        
Current assets        
Cash and cash equivalents 72,020 71,932 116,387 86,570
Accounts receivable, net 37,086 29,316    
Intercompany receivables 72,582 71,442    
Prepaid expenses and other current assets 17,314 23,053    
Total current assets 199,002 195,743    
Vessels, port terminals and other fixed assets, net 437,934 443,625    
Deposits for vessel acquisitions 27,700 23,225    
Investment in affiliates 13,224 12,775    
Other long-term assets 23,112 28,740    
Goodwill and other intangibles 173,080 174,993    
Total non-current assets 675,050 683,358    
Total assets 874,052 879,101    
Current liabilities        
Accounts payable 31,637 34,847    
Accrued expenses and other liabilities 25,977 24,858    
Deferred income and cash received in advance 4,355 6,182    
Intercompany payables 1,264 1,783    
Current portion of capital lease obligations 2,886 1,449    
Current portion of long-term debt 69 69    
Total current liabilities 66,188 69,188    
Long-term debt, net of current portion 367,059 375,390    
Capital lease obligations, net of current portion 18,555 20,911    
Other long-term liabilities and deferred income 1,066 2,885    
Deferred tax liability 11,364 12,735    
Total non-current liabilities 398,044 411,921    
Total liabilities 464,232 481,109    
Noncontrolling interest 117,251 113,547    
Total Navios Holdings stockholders' equity 292,568 284,445    
Total liabilities and stockholders' equity 874,051 879,101    
Eliminations        
Current assets        
Intercompany receivables (115,107) (95,009)    
Total current assets (115,107) (95,009)    
Investments in subsidiaries (1,906,839) (1,893,771)    
Total non-current assets (1,906,839) (1,893,771)    
Total assets (2,021,946) (1,988,780)    
Current liabilities        
Intercompany payables (115,107) (95,009)    
Total current liabilities (115,107) (95,009)    
Total liabilities (115,107) (95,009)    
Total Navios Holdings stockholders' equity (1,906,839) (1,893,771)    
Total liabilities and stockholders' equity (2,021,946) (1,988,780)    
Total        
Current assets        
Cash and cash equivalents 180,366 247,556 $ 232,435 $ 187,831
Restricted cash 906 2,564    
Accounts receivable, net 50,981 85,581    
Intercompany receivables 0 0    
Due from affiliate companies 17,799 27,196    
Prepaid expenses and other current assets 41,474 54,234    
Total current assets 291,526 417,131    
Vessels, port terminals and other fixed assets, net 1,869,694 1,911,143    
Deposits for vessel acquisitions 51,990 45,365    
Investments in subsidiaries 0 0    
Investment in available-for-sale securities 6,261 6,701    
Investment in affiliates 371,405 344,453    
Long-term receivable from affiliate companies   9,625    
Loan receivable from affiliate companies 11,464 7,791    
Other long-term assets 42,059 35,660    
Goodwill and other intangibles 340,785 349,828    
Total non-current assets 2,693,658 2,710,566    
Total assets 2,985,184 3,127,697    
Current liabilities        
Accounts payable 34,773 53,837    
Accrued expenses and other liabilities 94,815 107,320    
Deferred income and cash received in advance 6,336 12,445    
Intercompany payables 0 0    
Due to affiliate company 3,930      
Current portion of capital lease obligations 2,886 1,449    
Current portion of long-term debt 8,100 23,283    
Total current liabilities 150,840 198,334    
Long-term debt, net of current portion 1,575,923 1,589,607    
Capital lease obligations, net of current portion 18,555 20,911    
Unfavorable lease terms 14,756 22,141    
Other long-term liabilities and deferred income 14,874 17,459    
Deferred tax liability 11,364 12,735    
Total non-current liabilities 1,635,472 1,662,853    
Total liabilities 1,786,312 1,861,187    
Noncontrolling interest 117,251 113,547    
Total Navios Holdings stockholders' equity 1,081,621 1,152,963    
Total liabilities and stockholders' equity $ 2,985,184 $ 3,127,697