XML 74 R40.htm IDEA: XBRL DOCUMENT v3.21.1
Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory [Line Items]    
Inventories $ 681 $ 501
Lubricants [Member]    
Inventory [Line Items]    
Inventories 348 403
Bunkers [Member]    
Inventory [Line Items]    
Inventories $ 333 $ 98