XML 42 R46.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Discontinued Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property Plant And Equipment [Line Items]      
Vessel improvement costs capitalized $ 19,896 $ 277  
Vessels part of the Crude and Product tanker business      
Property Plant And Equipment [Line Items]      
Paid advances relating to the purchase of exhaust gas cleaning systems and ballast water treatment systems $ 1,110 1,035  
Vessel improvement costs capitalized   1,091 $ 143
M/T Aristaios and M/T Anikitos      
Property Plant And Equipment [Line Items]      
Vessels cost   73,959  
Above market acquired charters acquisition   $ 10,041