Inventory (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Major Classes of Inventory

December 31,	2018			2017
(dollars in thousands)
Raw materials and starting stock	$	9,555		$	8,527
Semi-finished and finished steel products		115,627			99,820
Operating materials		12,515			10,850
Gross inventory		137,697			119,197
Inventory reserves		(2,959	)		(2,534	)
Total inventory, net	$	134,738		$	116,663