Segment Information (Table) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]            
Revenue $ 119,839 $ 145,408 $ 238,119 $ 267,599    
Administrative fee revenue from affiliates 3,882 3,502 7,804 6,881    
Interest income/expense and finance cost, net (27,838) (28,521) (55,876) (56,567)    
Depreciation and amortization (27,479) (25,828) (48,684) (51,502)    
Equity in net earnings of affiliated companies 17,968 7,079 31,880 29,497    
Net (loss)/income attributable to Navios Holdings common stockholders (24,813) (36,680) (51,491) (34,627)    
Total assets 2,985,184 3,077,037 2,985,184 3,077,037 $ 3,127,697  
Goodwill 160,336 160,336 160,336 160,336 160,336  
Capital expenditures (6,964) (81,196) (11,202) (128,040)    
Investments in affiliates 371,405 340,375 371,405 340,375 344,453  
Cash and cash equivalents 180,366 232,435 180,366 232,435 247,556 $ 187,831
Restricted cash 906 2,631 906 2,631 $ 2,564  
Long-term debt (including current and non-current portion) 1,584,023 1,624,712 1,584,023 1,624,712    
Drybulk Vessel Operations            
Segment Reporting Information [Line Items]            
Revenue 53,583 75,440 106,801 152,033    
Administrative fee revenue from affiliates 3,882 3,502 7,804 6,881    
Interest income/expense and finance cost, net (21,103) (21,075) (42,328) (42,405)    
Depreciation and amortization (20,888) (19,847) (35,626) (39,454)    
Equity in net earnings of affiliated companies 17,968 7,079 31,880 29,497    
Net (loss)/income attributable to Navios Holdings common stockholders (30,820) (22,999) (58,025) (20,833)    
Total assets 2,382,752 2,472,563 2,382,752 2,472,563    
Goodwill 56,240 56,240 56,240 56,240    
Capital expenditures (480) (54,617) (2,276) (89,300)    
Investments in affiliates 371,405 340,375 371,405 340,375    
Cash and cash equivalents 108,346 116,049 108,346 116,049    
Restricted cash 906 2,631 906 2,631    
Long-term debt (including current and non-current portion) 1,216,896 1,249,218 1,216,896 1,249,218    
Logistics Business            
Segment Reporting Information [Line Items]            
Revenue 66,256 69,968 131,318 115,566    
Administrative fee revenue from affiliates 0 0 0 0    
Interest income/expense and finance cost, net (6,735) (7,446) (13,548) (14,162)    
Depreciation and amortization (6,591) (5,981) (13,058) (12,048)    
Equity in net earnings of affiliated companies 0 0 0 0    
Net (loss)/income attributable to Navios Holdings common stockholders 6,007 (13,681) 6,534 (13,794)    
Total assets 602,432 604,474 602,432 604,474    
Goodwill 104,096 104,096 104,096 104,096    
Capital expenditures (6,484) (26,579) (8,926) (38,740)    
Investments in affiliates 0 0 0 0    
Cash and cash equivalents 72,020 116,386 72,020 116,386    
Restricted cash 0 0 0 0    
Long-term debt (including current and non-current portion) $ 367,127 $ 375,494 $ 367,127 $ 375,494