CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME [Abstract]      
Revenue $ 463,049 $ 419,782 $ 480,820
Administrative fee revenue from affiliates 23,667 21,799 16,177
Time charter, voyage and logistics business expenses (213,929) (175,072) (247,882)
Direct vessel expenses (116,713) (127,396) (128,168)
General and administrative expenses incurred on behalf of affiliates (23,667) (21,799) (16,177)
General and administrative expenses (27,521) (25,295) (34,183)
Depreciation and amortization (104,112) (113,825) (120,310)
Provision for losses on accounts receivable (269) (1,304) (59)
Interest income 6,831 4,947 2,370
Interest expense and finance cost (121,611) (113,639) (113,151)
Impairment losses (50,565) 0 0
(Loss)/gain on bond and debt extinguishment (981) 29,187 0
Gain on sale of assets 1,064 0 0
Other income 6,140 18,175 4,840
Other expense (13,761) (11,665) (34,982)
Loss before equity in net earnings of affiliated companies (172,378) (96,105) (190,705)
Equity/(loss) in net earnings of affiliated companies 4,399 (202,779) 61,484
Loss before taxes (167,979) (298,884) (129,221)
Income tax benefit/(expense) 3,192 (1,265) 3,154
Net loss (164,787) (300,149) (126,067)
Less: Net income attributable to the noncontrolling interest (1,123) (3,674) (8,045)
Net loss attributable to Navios Holdings common stockholders (165,910) (303,823) (134,112)
Loss attributable to Navios Holdings common stockholders, basic and diluted $ (175,298) $ (273,105) $ (150,314)
Basic and diluted loss per share attributable to Navios Holdings common stockholders $ (1.5) $ (2.54) $ (1.42)
Weighted average number of shares, basic and diluted 166,673,459 107,366,783 105,896,235
Other comprehensive income/(loss)      
Unrealized holding gain/(loss) on investments in-available-for-sale securities $ 2 $ 100 $ (1,649)
Reclassification to earnings 0 345 1,782
Total other comprehensive income 2 445 133
Total comprehensive loss (164,785) (299,704) (125,934)
Comprehensive income attributable to noncontrolling interest (1,123) (3,674) (8,045)
Total comprehensive loss attributable to Navios Holdings common stockholders $ (165,908) $ (303,378) $ (133,979)