Inventories

12 Months Ended

Dec. 31, 2015

Inventories [Abstract]

Inventory Disclosure [Text Block]

INVENTORIES

December 31,	2015		2014
(Dollars in thousands)
Raw materials	$	19,148	$	19,427
Work in process	21,063		30,797
Finished goods	21,558		24,453
Inventories	$	61,769	$	74,677

Service wheel and supplies inventory included in other non-current assets in the consolidated balance sheets totaled $6.9 million and $6.4 million at December 31, 2015 and 2014, respectively. Included in raw materials were operating supplies and spare parts totaling $9.2 million and $8.8 million at December 31, 2015 and 2014, respectively.