XML 100 R86.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Schedule III - Supplemental Financial Information (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Tubular and Pipe Products [Member]    
Inventory, LIFO Reserve, Effect on Income, Net, Total $ 3,669 $ 8,408