Fair Value of Financial Instruments - Assets measured at Fair Value on a Non-Recurring Basis (Table) (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Assets | ||
| Investents in affiliates including accrued interest | $ 148,095 | |
| Quoted Prices in Active Markets for Identical Assets (Level I) | ||
| Assets | ||
| Investents in affiliates including accrued interest | $ 148,095 | |
| Navios Horizon | ||
| Assets | ||
| Vessels, port terminals and other fixed assets, net (for Navios Horizon) | $ 6,548 | |
| Navios Horizon | Significant Other Observable Inputs (Level II) | ||
| Assets | ||
| Vessels, port terminals and other fixed assets, net (for Navios Horizon) | $ 6,548 |