Business Segments (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Business Segments [Abstract]
(Loss) income for reportable segments	$ (738)	$ 9,258
Interest expense	(1,170)	(613)
Interest income	55	57
Other (expense) income	(715)	803
LIFO income (expense)	73	(6)
Equity in (loss) income of nonconsolidated investment	(196)	173
Corporate expense, cost of capital elimination and other unallocated charges	(1,458)	(3,007)
(Loss) income from operations, before income taxes	$ (4,149)	$ 6,665