Business Segments (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Segments [Abstract]
Profit (loss) for reportable segments	$ 2,200	$ (738)
Interest expense	(2,108)	(1,170)
Interest income	56	55
Other income	(5)	(715)
LIFO income	11	73
Equity in loss of nonconsolidated investment	(200)	(196)
Corporate expense, cost of capital elimination and other unallocated charges	(1,945)	(1,458)
Loss before income taxes	$ (1,991)	$ (4,149)