Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Net operating loss carryforward	$ 77,400
Valuation allowance increase	5,400
Deferred tax assets, net	285,127	$ 258,142
Current taxes payable	31,300	31,300
Current taxes receivable	1,000	1,000
Unrecognized tax benefits	2,717	5,510	$ 5,158	$ 1,750
Unrecognized tax benefits, accrued interest and penalties	$ 800	$ 1,200