Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Indemnification exposure, including interest for discontinued operating unit	$ 25,000
Gain recorded on pre-tax legal settlement	4,500
Gain/(loss) from sale of discontinued operations, net of tax	$ 313	$ (1,930)	$ 0