Investments in affiliates and investments in available-for-sale securities (Table) (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Navios Partners |
|
|
|
|
|
|
|
| Balance sheet |
|
|
|
|
|
|
|
| Cash and cash equivalents, including restricted cash |
$ 58,322
|
|
$ 58,322
|
|
$ 29,933
|
$ 25,088
|
|
| Current assets |
89,350
|
|
89,350
|
|
60,306
|
56,349
|
|
| Non-current assets |
1,239,273
|
|
1,239,273
|
|
1,244,996
|
1,212,231
|
|
| Current liabilities |
54,075
|
|
54,075
|
|
54,247
|
98,950
|
|
| Long- term debt including current portion, net |
511,669
|
|
511,669
|
|
493,463
|
523,776
|
|
| Non-current liabilities |
491,262
|
|
491,262
|
|
483,345
|
489,421
|
|
| Income Statement |
|
|
|
|
|
|
|
| Revenue |
62,571
|
$ 59,954
|
173,819
|
$ 152,383
|
211,652
|
190,524
|
$ 223,676
|
| Net (loss)/ income before non-cash change in fair value of Junior Loan I and Junior Loan II |
|
|
|
|
(15,090)
|
(52,549)
|
41,805
|
| Net income/ (loss) |
10,457
|
9,173
|
(13,598)
|
7,965
|
(15,090)
|
(52,549)
|
41,805
|
| Navios Acquisition |
|
|
|
|
|
|
|
| Balance sheet |
|
|
|
|
|
|
|
| Cash and cash equivalents, including restricted cash |
48,313
|
|
48,313
|
|
86,458
|
|
|
| Current assets |
90,536
|
|
90,536
|
|
119,733
|
|
|
| Non-current assets |
1,365,936
|
|
1,365,936
|
|
1,453,048
|
|
|
| Current liabilities |
136,826
|
|
136,826
|
|
74,618
|
|
|
| Long- term debt including current portion, net |
1,016,324
|
|
1,016,324
|
|
1,065,369
|
|
|
| Non-current liabilities |
941,694
|
|
941,694
|
|
1,035,688
|
|
|
| Income Statement |
|
|
|
|
|
|
|
| Revenue |
41,589
|
54,021
|
129,218
|
176,961
|
|
|
|
| Net income/ (loss) |
$ (23,408)
|
$ (8,105)
|
$ (69,942)
|
$ (66,907)
|
|
|
|
| Navios Europe I |
|
|
|
|
|
|
|
| Balance sheet |
|
|
|
|
|
|
|
| Cash and cash equivalents, including restricted cash |
|
|
|
|
19,185
|
10,785
|
|
| Current assets |
|
|
|
|
22,417
|
15,980
|
|
| Non-current assets |
|
|
|
|
145,940
|
169,925
|
|
| Current liabilities |
|
|
|
|
21,284
|
18,490
|
|
| Long- term debt including current portion, net |
|
|
|
|
75,472
|
86,060
|
|
| Non-current liabilities |
|
|
|
|
125,283
|
155,387
|
|
| Income Statement |
|
|
|
|
|
|
|
| Revenue |
|
|
|
|
37,468
|
40,589
|
41,437
|
| Net (loss)/ income before non-cash change in fair value of Junior Loan I and Junior Loan II |
|
|
|
|
(20,778)
|
(2,174)
|
(1,347)
|
| Net income/ (loss) |
|
|
|
|
9,762
|
16,137
|
(1,118)
|
| Navios Europe II |
|
|
|
|
|
|
|
| Balance sheet |
|
|
|
|
|
|
|
| Cash and cash equivalents, including restricted cash |
|
|
|
|
16,882
|
16,916
|
|
| Current assets |
|
|
|
|
28,403
|
19,487
|
|
| Non-current assets |
|
|
|
|
195,784
|
232,363
|
|
| Current liabilities |
|
|
|
|
25,805
|
24,126
|
|
| Long- term debt including current portion, net |
|
|
|
|
109,223
|
119,234
|
|
| Non-current liabilities |
|
|
|
|
164,276
|
184,530
|
|
| Income Statement |
|
|
|
|
|
|
|
| Revenue |
|
|
|
|
38,633
|
30,893
|
20,767
|
| Net (loss)/ income before non-cash change in fair value of Junior Loan I and Junior Loan II |
|
|
|
|
22,749
|
(25,062)
|
1,673
|
| Net income/ (loss) |
|
|
|
|
(9,086)
|
$ (34,059)
|
$ 77,252
|
| Navios Containers |
|
|
|
|
|
|
|
| Balance sheet |
|
|
|
|
|
|
|
| Cash and cash equivalents, including restricted cash |
|
|
|
|
14,501
|
|
|
| Current assets |
|
|
|
|
21,371
|
|
|
| Non-current assets |
|
|
|
|
245,440
|
|
|
| Current liabilities |
|
|
|
|
49,559
|
|
|
| Long- term debt including current portion, net |
|
|
|
|
119,033
|
|
|
| Non-current liabilities |
|
|
|
|
76,534
|
|
|
| Income Statement |
|
|
|
|
|
|
|
| Revenue |
|
|
|
|
39,188
|
|
|
| Net (loss)/ income before non-cash change in fair value of Junior Loan I and Junior Loan II |
|
|
|
|
2,638
|
|
|
| Net income/ (loss) |
|
|
|
|
$ 2,638
|
|
|