UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-in Capital
Retained Earnings/ (Accumulated Deficit)
Accumulated Other Comprehensive Loss
Total Navios Holdings' Stockholders' Equity
Noncontrolling Interest
Balance, shares at Dec. 31, 2017   46,302 12,038,647          
Balance, value at Dec. 31, 2017 $ 617,164 $ 0 $ 1 $ 682,116 $ (166,021) $ 2 $ 516,098 $ 101,066
Net loss (41,236)       (40,857)   (40,857) (379)
Cumulative-effect adjustment due to adoption of new standard (Note 13)         2 (2)    
Stock-based compensation expenses (Note 9), shares     432,431          
Stock-based compensation expenses (Note 9), value 1,154     1,154     1,154  
Cancellation of shares (Note 9), shares     (150)          
Balance (unaudited), shares at Mar. 31, 2018   46,302 12,470,928          
Balance (unaudited), value at Mar. 31, 2018 577,082 $ 0 $ 1 683,270 (206,876) 0 476,395 100,687
Net loss (23,849)       (25,294)   (25,294) 1,445
Stock-based compensation expenses (Note 9), value 1,168     1,168     1,168  
Cancellation of shares (Note 9), shares     (300)          
Balance (unaudited), shares at Jun. 30, 2018   46,302 12,470,628          
Balance (unaudited), value at Jun. 30, 2018 554,401 $ 0 $ 1 684,438 (232,170) 0 452,269 102,132
Balance, shares at Dec. 31, 2018   46,302 12,843,414          
Balance, value at Dec. 31, 2018 521,680 $ 0 $ 1 686,671 (434,739) 0 251,933 269,747
Net loss (3,616)       (5,304)   (5,304) 1,688
Tender Offer - Redemption of preferred stock (Note 9), shares   (10,930)            
Tender Offer - Redemption of preferred stock (Note 9), value (9,932)     (26,297) 16,365   (9,932)  
Stock-based compensation expenses (Note 9), shares     151,515          
Stock-based compensation expenses (Note 9), value 731     731     731  
Issuance of capital surplus, shares     (1,123)          
Issuance of capital surplus, value (3)     (3)     (3)  
Balance (unaudited), shares at Mar. 31, 2019   35,372 12,993,806          
Balance (unaudited), value at Mar. 31, 2019 508,860 $ 0 $ 1 661,102 (423,678) 0 237,425 271,435
Net loss (35,867)       (36,431)   (36,431) 564
Tender Offer - Redemption of preferred stock (Note 9), shares   (8,841)            
Tender Offer - Redemption of preferred stock (Note 9), value (8,703)     (21,271) 12,568   (8,703)  
Conversion of convertible preferred stock to common stock (Note 9), shares converted   (1,309)            
Conversion of convertible preferred stock to common stock (Note 9), shares issued     140,059          
Stock-based compensation expenses (Note 9), value 742     742     742  
Cancellation of shares (Note 9), shares     (59)          
Balance (unaudited), shares at Jun. 30, 2019   25,222 13,133,806          
Balance (unaudited), value at Jun. 30, 2019 $ 465,032 $ 0 $ 1 $ 640,573 $ (447,541) $ 0 $ 193,033 $ 271,999