Investment in affiliates and available-for-sale securities (Details) - USD ($)
$ in Thousands |
|
1 Months Ended |
2 Months Ended |
3 Months Ended |
5 Months Ended |
6 Months Ended |
10 Months Ended |
12 Months Ended |
Jan. 03, 2019 |
Jan. 31, 2019 |
Feb. 28, 2019 |
Feb. 28, 2018 |
Feb. 21, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Mar. 31, 2018 |
May 21, 2019 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Nov. 14, 2018 |
Dec. 31, 2018 |
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Equity in net (losses)/ earnings of affiliated companies |
|
|
|
|
|
$ (16,779)
|
$ (3,025)
|
|
|
$ (12,502)
|
$ (9,489)
|
|
|
| Investments in affiliates |
|
|
|
|
|
72,512
|
174,263
|
|
|
72,512
|
174,263
|
|
$ 91,111
|
| Dividends received |
|
|
|
|
|
|
|
|
|
2,919
|
2,919
|
|
|
| Stockholders' equity, Reverse stock split |
one-for-ten reverse stock split
|
|
|
|
|
|
|
|
|
|
|
|
|
| Navios Partners |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Equity in net (losses)/ earnings of affiliated companies |
|
|
|
|
|
$ 328
|
473
|
|
|
$ 656
|
946
|
|
|
| General partner interest of Navios Holdings |
|
|
2.00%
|
|
2.00%
|
|
|
2.00%
|
|
|
|
|
2.00%
|
| Partners capital account units acquisitions |
|
|
7,775
|
|
|
|
|
27,960
|
|
|
|
|
29,888
|
| Payments to acquire investment |
|
|
$ 8
|
|
$ 714
|
|
|
$ 64
|
|
|
|
|
$ 27
|
| Partners capital account acquisitions |
|
|
|
|
$ 5,000
|
|
|
|
|
|
|
|
|
| Navios Partners |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Number of shares issued-common stock |
|
|
|
|
18,422,000
|
|
|
|
|
|
|
|
|
| Private placement of units to directors and/or officers |
|
|
380,952
|
|
|
|
|
1,370,044
|
|
|
|
|
1,464,494
|
| Stockholders' equity, Reverse stock split |
|
|
|
|
|
|
|
|
1-for-15 reverse stock split
|
|
|
|
|
| Navios Partners | Share Repurchase Program |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
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| Share repurchase program, Authorized amount |
|
$ 50,000
|
|
|
|
|
|
|
|
|
|
|
|
| Stock repurchase program period in force |
|
2 years
|
|
|
|
|
|
|
|
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|
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| Number of shares repurchased |
|
|
|
|
|
|
|
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|
3,503,908
|
|
|
|
| Navios Acquisition |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stockholders' equity, Reverse stock split |
|
|
|
|
|
|
|
|
|
|
|
1-for-15 reverse stock split
|
|
| Navios Acquisition | Share Repurchase Program |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
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| Share repurchase program, Authorized amount |
|
|
|
$ 25,000
|
|
|
|
|
|
|
|
|
|
| Stock repurchase program period in force |
|
|
|
2 years
|
|
|
|
|
|
|
|
|
|
| Number of shares repurchased |
|
|
|
|
|
|
|
|
|
735,251
|
|
|
|
| Navios Partners |
|
|
|
|
|
|
|
|
|
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|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
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|
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| Common units held by Navios Holdings |
|
|
|
|
|
2,070,216
|
|
|
|
2,070,216
|
|
|
|
| General Partner units held by Navios Holdings |
|
|
|
|
|
230,524
|
|
|
|
230,524
|
|
|
|
| Difference between carrying amount of investment and underlying equity in net assets of equity method investee |
|
|
|
|
|
$ 120,238
|
|
|
|
$ 120,238
|
|
|
$ 126,034
|
| Equity in net (losses)/ earnings of affiliated companies |
|
|
|
|
|
$ 902
|
5,642
|
|
|
$ 3,153
|
9,448
|
|
|
| Ownership percentage of Navios Holdings |
|
|
|
|
|
20.50%
|
|
|
|
20.50%
|
|
|
|
| General partner interest of Navios Holdings |
|
|
|
|
|
|
|
|
|
2.10%
|
|
|
|
| Investments in affiliates |
|
|
|
|
|
$ 30,453
|
|
|
|
$ 30,453
|
|
|
29,328
|
| Dividends received |
|
|
|
|
|
690
|
690
|
|
|
1,380
|
690
|
|
|
| Market value of the investment |
|
|
|
|
|
31,060
|
|
|
|
31,060
|
|
|
|
| Other than temporary impairment loss on investments |
|
|
|
|
|
|
|
|
|
|
|
|
55,524
|
| Navios Acquisition |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Schedule Of Equity Method Investments [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Difference between carrying amount of investment and underlying equity in net assets of equity method investee |
|
|
|
|
|
85,112
|
|
|
|
85,112
|
|
|
87,500
|
| Equity in net (losses)/ earnings of affiliated companies |
|
|
|
|
|
$ (4,728)
|
(9,321)
|
|
|
$ (3,262)
|
(20,192)
|
|
|
| Ownership percentage of Navios Holdings |
|
|
|
|
|
36.00%
|
|
|
|
36.00%
|
|
|
|
| Investments in affiliates |
|
|
|
|
|
$ 30,650
|
|
|
|
$ 30,650
|
|
|
$ 50,374
|
| Dividends received |
|
|
|
|
|
2,766
|
$ 1,460
|
|
|
2,919
|
$ 2,919
|
|
|
| Market value of the investment |
|
|
|
|
|
30,650
|
|
|
|
$ 30,650
|
|
|
|
| Other than temporary impairment loss on investments |
|
|
|
|
|
$ 13,543
|
|
|
|
|
|
|
|