Income Taxes Income from continuing operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 80,714	$ 74,288	$ 33,508
Income (Loss) from Continuing Operations before Income Taxes, Foreign	4,450	(4,589)	6,284
Income (Loss) from Continuing Operations Attributable to Parent	$ 85,164	$ 69,699	$ 39,792