UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Accumulated Other Comprehensive Income
Total Navios Holdings' Stockholders' Equity
Noncontrolling Interest
Balance, shares at Dec. 31, 2016   49,504 117,131,407          
Balance, value at Dec. 31, 2016 $ 803,553 $ 0 $ 12 $ 678,531 $ (256) $ 0 $ 678,287 $ 125,266
Net loss (85,462)       (85,977)   (85,977) 515
Tender Offer - Redemption of preferred stock (Note 9), shares   (766)            
Tender Offer - Redemption of preferred stock (Note 9), shares     625,815          
Tender Offer - Redemption of preferred stock (Note 9), value (482)     (716) 234   (482)  
Conversion of convertible preferred stock to common stock (Note 9), shares   (2,436)            
Conversion of convertible preferred stock to common stock (Note 9), shares     1,740,000          
Stock-based compensation expenses, (Note 9) value 2,110     2,110     2,110  
Balance (unaudited), shares at Jun. 30, 2017   46,302 119,497,222          
Balance (unaudited), value at Jun. 30, 2017 719,719 $ 0 $ 12 679,925 (85,999) 0 593,938 125,781
Balance, shares at Dec. 31, 2017   46,302 120,386,472          
Balance, value at Dec. 31, 2017 617,164 $ 0 $ 12 682,105 (166,021) 2 516,098 101,066
Net loss (65,085)       (66,151)   (66,151) 1,066
Cumulative-effect adjustment due to adoption of new standard (Note 13)         2 (2)    
Stock-based compensation expenses, (Note 9) shares     4,324,308          
Stock-based compensation expenses, (Note 9) value 2,322     2,322     2,322  
Cancellation of shares (Note 9), shares     (4,500)          
Balance (unaudited), shares at Jun. 30, 2018   46,302 124,706,280          
Balance (unaudited), value at Jun. 30, 2018 $ 554,401 $ 0 $ 12 $ 684,427 $ (232,170) $ 0 $ 452,269 $ 102,132