XML 59 R46.htm IDEA: XBRL DOCUMENT v3.19.1
Inventories - Schedule of Inventory, Current (Detail) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Bunkers $ 1,082,384 $ 1,312,116
Lubricants 1,264,339 1,450,183
Total $ 2,346,723 $ 2,762,299