Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended |
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||
| Impairment loss | $ 1,280 | ||
| Navios Acquisition | |||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||
| Other than temporary impairment loss on investments | $ 13,543 | ||
| Navios Partners | |||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||
| Other than temporary impairment loss on investments | $ 55,524 | ||
| Two vessels | |||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||
| Vessel impairment loss | $ 9,998 | ||
| Four vessels | |||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | |||
| Impairment loss | $ 179,186 |