Income Taxes (Components Of Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current provision:
State	$ 1,535	$ 2,752	$ 1,099
Foreign	8,121	6,314	7,006
Total current	9,656	9,066	8,105
Deferred provision (benefit) for taxes:
Federal	170,177	(3,023)	1,458
State	22,992	(3,106)	(887)
Foreign	30,425	(40,636)	(472)
Change in valuation allowance	(222,185)	46,760	431
Total deferred	1,409	(5)	530
Total provision for income taxes	$ 11,065	$ 9,061	$ 8,635