Segment Information (Table) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Information [Line Items]            
Revenue $ 118,618 $ 105,733 $ 213,964 $ 207,220    
Administrative fee revenue from affiliates 5,360 5,463 10,658 10,945    
Interest expense and finance cost, net (27,565) (26,698) (54,987) (54,448)    
Depreciation and amortization (26,091) (27,132) (51,714) (46,959)    
Equity in net (losses)/earnings of affiliated companies (3,775) 3,424 1,307 16,376    
Net (loss)/income attributable to Navios Holdings common stockholders (37,258) (26,416) (85,977) (33,881)    
Total assets 2,696,440 3,001,695 2,696,440 3,001,695 $ 2,752,895  
Goodwill 160,336 160,336 160,336 160,336 160,336  
Capital expenditures (13,078) (27,657) (29,170) (108,044)    
Investments in affiliates 189,195 388,772 189,195 388,772 160,071  
Cash and cash equivalents 130,208 140,529 130,208 140,529 135,992 $ 163,412
Restricted cash 4,462 2,671 4,462 2,671 $ 5,386  
Long-term debt (including current and non-current portion) 1,646,270 1,628,896 1,646,270 1,628,896    
Drybulk Vessel Operations            
Segment Reporting Information [Line Items]            
Revenue 59,237 46,991 110,782 93,259    
Administrative fee revenue from affiliates 5,360 5,463 10,658 10,945    
Interest expense and finance cost, net (21,270) (20,869) (42,911) (42,415)    
Depreciation and amortization (19,713) (20,745) (39,246) (33,898)    
Equity in net (losses)/earnings of affiliated companies (3,775) 3,424 1,307 16,376    
Net (loss)/income attributable to Navios Holdings common stockholders (40,085) (31,112) (86,885) (42,199)    
Total assets 2,036,569 2,363,866 2,036,569 2,363,866    
Goodwill 56,240 56,240 56,240 56,240    
Capital expenditures (63) (80) (99) (60,213)    
Investments in affiliates 189,195 388,772 189,195 388,772    
Cash and cash equivalents 67,309 68,223 67,309 68,223    
Restricted cash 4,462 2,671 4,462 2,671    
Long-term debt (including current and non-current portion) 1,205,392 1,236,709 1,205,392 1,236,709    
Logistics Business            
Segment Reporting Information [Line Items]            
Revenue 59,381 58,742 103,182 113,961    
Administrative fee revenue from affiliates 0 0 0 0    
Interest expense and finance cost, net (6,295) (5,829) (12,076) (12,033)    
Depreciation and amortization (6,378) (6,387) (12,468) (13,061)    
Equity in net (losses)/earnings of affiliated companies 0 0 0 0    
Net (loss)/income attributable to Navios Holdings common stockholders 2,827 4,696 908 8,318    
Total assets 659,871 637,829 659,871 637,829    
Goodwill 104,096 104,096 104,096 104,096    
Capital expenditures (13,015) (27,577) (29,071) (47,831)    
Investments in affiliates 0 0 0 0    
Cash and cash equivalents 62,899 72,306 62,899 72,306    
Restricted cash 0 0 0 0    
Long-term debt (including current and non-current portion) $ 440,878 $ 392,187 $ 440,878 $ 392,187