Loss Per Common Share (Table) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Numerator:      
Net loss attributable to Navios Holdings common stockholders $ (303,823) $ (134,112) $ (56,203)
Declared and undeclared dividend on preferred stock and on unvested restricted shares (15,909) (16,202) (10,773)
Tender Offer – Redemption of preferred stock Series G and H including $5,063 of undeclared preferred dividend cancelled 46,627 0 0
Loss available to Navios Holdings common stockholders, basic and diluted $ (273,105) $ (150,314) $ (66,976)
Denominator:      
Denominator for basic and diluted net loss per share attributable to Navios Holdings stockholders - adjusted weighted shares 107,366,783 105,896,235 103,476,614
Basic and diluted net loss per share attributable to Navios Holdings stockholders $ (2.54) $ (1.42) $ (0.65)