Transactions with Related Parties - Vessels Charter Hire and Management Fees (Details) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended 5 Months Ended 6 Months Ended 11 Months Ended 24 Months Ended
Jan. 31, 2016
Jun. 30, 2016
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 05, 2015
May 28, 2014
Jun. 30, 2016
Jun. 30, 2015
Nov. 18, 2014
Dec. 13, 2013
Apr. 30, 2016
Voyage expenses       $ (8,778,000)       $ (1,214,000) $ (14,919,000)      
Voyage revenue     $ 2,946,000                  
Navios Apollon                        
Vessel year built               2000        
Vessel type               Ultra-Handymax        
Navios Apollon | Charter hire agreement                        
Lease term               two years        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Feb. 29, 2012        
Navios Apollon | First year charter hire agreement                        
Charter hire daily rate               $ 12,500        
Navios Apollon | Second year charter hire agreement                        
Charter hire daily rate               $ 13,500        
Navios Apollon | Extended charter hire agreement                        
Lease term               six months        
Charter hire daily rate               $ 13,500        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Jan. 31, 2014        
Navios Apollon | Further extension, Charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 12,500        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Oct. 31, 2014        
Navios Apollon | Second further extension, Charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 12,500        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Apr. 30, 2015        
Navios Prosperity                        
Vessel year built               2007        
Vessel type               Panamax        
Navios Prosperity | Charter hire agreement                        
Lease term               one year with two six-month extension options        
Charter hire daily rate               $ 12,000        
Date of agreement               May 31, 2012        
Navios Prosperity | Extended charter hire agreement                        
Lease term               one year        
Date of agreement               Apr. 30, 2014        
Navios Prosperity | Novation agreement                        
Date of agreement               Mar. 05, 2015        
Navios Prosperity | First $1.5 milion in profits above the base rate | Extended charter hire agreement                        
Profit sharing, Percentage allocation based on earnings               100.00%        
Navios Prosperity | Thereafter of the first $1.5 million in profits above the base rate | Extended charter hire agreement                        
Profit sharing, Percentage allocation based on earnings               50.00%        
Navios Libra II                        
Vessel year built               1995        
Vessel type               Panamax        
Navios Libra II | Charter hire agreement                        
Lease term               three years        
Charter hire daily rate               $ 12,000        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Sep. 30, 2012        
Navios Libra II | Extended charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 12,000        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Apr. 30, 2015        
Navios Felicity                        
Vessel year built               1997        
Vessel type               Panamax        
Navios Felicity | Charter hire agreement                        
Lease term               one year with two six-month extension options        
Charter hire daily rate               $ 12,000        
Date of agreement               May 31, 2013        
Navios Felicity | Extended charter hire agreement                        
Date of agreement               Feb. 28, 2014        
Navios Felicity | Extended charter hire agreement 2                        
Date of agreement               Aug. 31, 2014        
Navios Felicity | Further extension, Charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 12,000        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Apr. 30, 2015        
Navios Felicity | First $1.5 milion in profits above the base rate | Charter hire agreement                        
Profit sharing, Percentage allocation based on earnings               100.00%        
Navios Felicity | Thereafter of the first $1.5 million in profits above the base rate | Charter hire agreement                        
Profit sharing, Percentage allocation based on earnings               50.00%        
Navios Aldebaran                        
Vessel year built               2008        
Vessel type               Panamax        
Navios Aldebaran | Charter hire agreement                        
Lease term               six months with a six-month extension option        
Charter hire daily rate               $ 11,000        
Date of agreement               May 31, 2013        
Navios Aldebaran | Extended charter hire agreement                        
Date of agreement               Dec. 31, 2013        
Navios Aldebaran | Further extension, Charter hire agreement                        
Lease term               six to nine months        
Date of agreement               Jul. 31, 2014        
Navios Aldebaran | Novation agreement                        
Date of agreement               Feb. 28, 2015        
Navios Aldebaran | First $2.5 millions in profits above the base rate | Extended charter hire agreement                        
Profit sharing, Percentage allocation based on earnings               100.00%        
Navios Aldebaran | Thereafter of the first $2.5 millions in profits above the base rate | Extended charter hire agreement                        
Profit sharing, Percentage allocation based on earnings               50.00%        
Navios Hope                        
Vessel year built               2005        
Vessel type               Panamax        
Navios Hope | Charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 10,000        
Date of agreement               Jul. 31, 2013        
Navios Hope | Extended charter hire agreement                        
Lease term               six months        
Date of agreement               Dec. 31, 2013        
Navios Hope | Further extension, Charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 10,000        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Jan. 31, 2015        
Navios Pollux                        
Vessel year built               2009        
Vessel type               Capesize        
Navios Pollux | Charter hire agreement                        
Lease term               one year        
Charter hire daily rate               $ 11,400        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Feb. 28, 2015        
Navios Gemini                        
Vessel year built               1994        
Vessel type               Panamax        
Navios Gemini | Charter hire agreement                        
Lease term               nine months        
Charter hire daily rate               $ 7,600        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Mar. 31, 2015        
Navios Fantastiks                        
Vessel year built               2005        
Vessel type               Capesize        
Navios Fantastiks | Charter hire agreement                        
Lease term               ten months        
Charter hire daily rate               $ 12,500        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Apr. 30, 2015        
Navios Sun, Navios Orbiter, Navios Soleil, Navios Alegria, Navios Harmony and Navios Hyperion | Charter hire agreement                        
Charter hire daily rate               $ 12,000        
Profit sharing, Percentage allocation based on earnings               50.00%        
Date of agreement               Apr. 30, 2015        
Navios Partners                        
Management fees     14,719,000 14,141,000       $ 29,438,000 27,542,000      
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                        
Management fees     24,318,000 24,293,000       $ 48,504,000 48,335,000      
Terms of reimbursement of fees and expenses under the management agreement               Effective March 30, 2012, Navios Acquisition could, upon request to Navios Holdings, partially or fully defer the reimbursement of drydocking and other extraordinary fees and expenses under the management agreement to a later date, but not later than January 5, 2016, and if reimbursed on a later date, such amounts would bear interest at a rate of 1% per annum over LIBOR. Commencing September 28, 2012, Navios Acquisition could, upon request, reimburse Navios Holdings partially or fully for any fixed management fees outstanding for a period of not more than nine months under the management agreement at a later date, but not later than January 5, 2016, and if reimbursed on a later date, such amounts would bear interest at a rate of 1% per annum over LIBOR.        
Navios Acquisition | MR2 product tanker and chemical tanker vessel | Management agreement                        
Daily management fee   $ 6,350         $ 6,000          
Fixed drydocking expenses             300,000          
Navios Acquisition | MR2 product tanker and chemical tanker vessel | Extended management agreement                        
Daily management fee                       $ 6,000
Navios Acquisition | LR1 product tanker vessel | Management agreement                        
Daily management fee   7,150         7,000          
Fixed drydocking expenses             300,000          
Navios Acquisition | LR1 product tanker vessel | Extended management agreement                        
Daily management fee                       7,000
Navios Acquisition | VLCC vessel | Management agreement                        
Daily management fee   $ 9,500         $ 10,000          
Navios Acquisition | VLCC vessel | Extended management agreement                        
Daily management fee                       $ 9,500
Navios Europe I | Management agreement                        
Management fees     5,438,000 4,978,000       $ 10,393,000 10,247,000      
Duration of agreements                     6 years  
Navios Midstream | Management agreement                        
Management fees     5,187,000 3,705,000       10,374,000 7,125,000      
Duration of agreements                   5 years    
Navios Midstream | VLCC vessel | Management agreement                        
Termination date of agreement                   Nov. 18, 2016    
Daily management fee                   $ 9,500    
Navios Europe II | Management agreement                        
Management fees     $ 5,703,000 $ 437,000       $ 11,466,000 $ 437,000      
Duration of agreements           6 years