Transactions with Related Parties - Vessels Charter Hire and Management Fees (Details) - USD ($)
1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended 11 Months Ended 12 Months Ended 16 Months Ended
Jan. 31, 2016
Jun. 30, 2017
Jun. 30, 2016
Jun. 07, 2017
May 31, 2016
Jun. 05, 2015
May 28, 2014
Jun. 30, 2017
Jun. 30, 2016
Nov. 18, 2014
Dec. 13, 2013
Dec. 31, 2015
Jun. 30, 2017
Voyage expenses               $ (651,000) $ (1,214,000)        
Voyage revenue   $ 0 $ 2,946,000                    
Navios Pollux | Charter hire agreement                          
Charter hire daily rate                       $ 11,400  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Hyperion | Charter hire agreement                          
Charter hire daily rate                       $ 12,000  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Gemini | Charter hire agreement                          
Charter hire daily rate                       $ 7,600  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Sun | Charter hire agreement                          
Charter hire daily rate                       $ 12,000  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Soleil | Charter hire agreement                          
Charter hire daily rate                       $ 12,000  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Alegria | Charter hire agreement                          
Charter hire daily rate                       $ 12,000  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Orbiter | Charter hire agreement                          
Charter hire daily rate                       $ 12,000  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Harmony | Charter hire agreement                          
Charter hire daily rate                       $ 12,000  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Fantastiks | Charter hire agreement                          
Charter hire daily rate                       $ 12,500  
Profit sharing, Percentage allocation based on earnings                       50.00%  
Navios Fulvia | Charter hire agreement                          
Charter hire daily rate               $ 11,500          
Date of agreement               Nov. 30, 2016          
Navios Partners                          
Management fees   14,322,000 14,719,000         $ 28,665,000 29,438,000        
Terms of reimbursement of fees and expenses under the management agreement               Effective August 31, 2016, Navios Partners could, upon request to Navios Holdings, partially or fully defer the reimbursement of dry docking and other extraordinary fees and expenses under the management agreement to a later date, but not later than January 5, 2018, and if reimbursed on a later date, such amounts would bear interest at a rate of 1% per annum over LIBOR.          
Navios Partners | Ultra-Handymax vessel                          
Daily management fee $ 4,000                       $ 4,100
Navios Partners | Panamax vessel                          
Daily management fee 4,100                       4,200
Navios Partners | Capesize vessel                          
Daily management fee 5,100                       5,250
Navios Partners | Container vessel of 6,800 TEU                          
Daily management fee 6,500                       6,700
Navios Partners | Container vessel more than 8,000 TEU                          
Daily management fee 7,200                       7,400
Navios Partners | Container vessel more than 13,000 TEU                          
Daily management fee $ 8,500                       $ 8,750
Navios Acquisition                          
Termination date of the administrative services agreement               May 2020          
Management fees   23,678,000 24,318,000         $ 47,096,000 48,504,000        
Navios Acquisition | MR2 product tanker and chemical tanker vessel | Management agreement                          
Daily management fee             $ 6,000            
Fixed drydocking expenses             300,000            
Navios Acquisition | MR2 product tanker and chemical tanker vessel | Amendment of management agreement                          
Daily management fee         $ 6,350                
Duration of agreements         2 years                
Navios Acquisition | LR1 product tanker vessel | Management agreement                          
Daily management fee             7,000            
Fixed drydocking expenses             300,000            
Navios Acquisition | LR1 product tanker vessel | Amendment of management agreement                          
Daily management fee         $ 7,150                
Duration of agreements         2 years                
Navios Acquisition | VLCC vessel | Management agreement                          
Daily management fee             $ 10,000            
Navios Acquisition | VLCC vessel | Extended management agreement                          
Daily management fee               $ 9,500          
Duration of agreements               2 years          
Navios Acquisition | VLCC vessel | Amendment of management agreement                          
Daily management fee         $ 9,500                
Navios Europe I | Management agreement                          
Management fees   5,376,000 5,438,000         $ 10,593,000 10,393,000        
Duration of agreements                     6 years    
Navios Midstream | Management agreement                          
Management fees   5,187,000 5,187,000         10,317,000 10,374,000        
Duration of agreements                   5 years      
Navios Midstream | VLCC vessel | Management agreement                          
Termination date of agreement                   Dec. 31, 2018      
Daily management fee                   $ 9,500      
Navios Europe II | Management agreement                          
Management fees   $ 5,473,000 $ 5,703,000         $ 11,186,000 $ 11,466,000        
Duration of agreements           6 years              
Navios Containers | Management agreement                          
Management fees       $ 915,000                  
Duration of agreements       5 years                  
Navios Containers | Automatic extension of management agreement                          
Duration of agreements               5 years          
Navios Containers | Container vessel of 4,250 TEU | Management agreement                          
Daily management fee       $ 6,100                  
Navios Containers | Container vessel of 3,450 TEU | Management agreement                          
Daily management fee       $ 6,100                  
Minimum | Navios Partners for the Navios Gemini, Navios Hyperion, Navios Soleil, Navios Harmony, Navios Orbiter, Navios Fantastiks, Navios Alegria, Navios Pollux and Navios Sun | Charter hire agreement                          
Lease term                       9 months  
Maximum | Navios Partners for the Navios Gemini, Navios Hyperion, Navios Soleil, Navios Harmony, Navios Orbiter, Navios Fantastiks, Navios Alegria, Navios Pollux and Navios Sun | Charter hire agreement                          
Lease term                       12 months