Income Taxes (Income (Loss) Before Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income before income taxes, equity in earnings in affiliates, and discontinued operations
United States	$ 130,752	$ 145,656	$ 71,667
Foreign	10,419	6,454	13,480
Income Before Income Taxes, Equity in Earnings of Affiliates and Discontinued Operations	141,171	152,110	85,147
Discontinued operations:
Income (loss) from operation of discontinued business	0	0	(2,265)
Total	$ 141,171	$ 152,110	$ 82,882