Operating Segments and Related Information (Results of Discontinued Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting [Abstract]
Revenue, net	$ (14)	$ 1,266	$ 2,640
Cost of sales	1,112	4,743	5,069
Selling, general and administrative expense	184	1,253	2,207
Depreciation and amortization	14	35	191
Pretax loss from discontinued operations	(1,324)	(4,765)	(4,827)
Income tax expense	0	0	0
Net loss from discontinued operations	$ (1,324)	$ (4,765)	$ (4,827)