Summary of Significant Accounting Policies - Basis Of Presentation, Subsidiaries, Affiliates and Restricted Cash (Details) - USD ($)
$ in Thousands |
12 Months Ended |
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Dec. 31, 2020 |
Dec. 31, 2019 |
Mar. 31, 2021 |
Jan. 31, 2021 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
| Restricted Cash And Cash Equivalents Items [Line Items] |
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| Restricted cash |
$ 16,303
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$ 736
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| Senior Notes |
1,263,566
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1,170,679
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| Current assets |
194,857
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168,001
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| Liabilities current excluding operating lease liability |
511,367
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| Working capital |
(316,510)
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| Retention Accounts |
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| Restricted Cash And Cash Equivalents Items [Line Items] |
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| Restricted cash |
684
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726
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| Amount Held as Security |
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| Restricted Cash And Cash Equivalents Items [Line Items] |
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| Restricted cash |
$ 10
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$ 10
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| Navios Logistics |
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| Schedule Of Equity Method Investments [Line Items] |
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| Ownership percentage of Navios Holdings |
63.80%
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| Navios Partners and its subsidiaries |
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| Schedule Of Equity Method Investments [Line Items] |
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| Economic interest |
17.90%
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12.60%
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| Navios Acquisition and its subsidiaries |
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| Schedule Of Equity Method Investments [Line Items] |
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| Economic interest |
29.50%
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| Navios Europe I and its subsidiaries |
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| Schedule Of Equity Method Investments [Line Items] |
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| Economic interest |
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47.50%
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| Navios Europe II and its subsidiaries |
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| Schedule Of Equity Method Investments [Line Items] |
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| Economic interest |
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47.50%
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| Navios Containers |
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| Schedule Of Equity Method Investments [Line Items] |
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| Ownership percentage of Navios Holdings |
3.90%
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3.70%
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| 2022 Notes |
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| Restricted Cash And Cash Equivalents Items [Line Items] |
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| Fixed interest rate |
7.375%
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| Restricted cash |
$ 15,609
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$ 14,250
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$ 15,251
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$ 358
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$ 10,129
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$ 7,410
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$ 14,000
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| Senior Notes |
$ 476,822
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$ 497,604
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| Maturity date |
Jan. 31, 2022
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| 2022 Senior Secured Notes |
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| Restricted Cash And Cash Equivalents Items [Line Items] |
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| Fixed interest rate |
11.25%
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| Senior Notes |
$ 305,000
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$ 305,000
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