Other Operating Expenses (Schedule Of Other Operating Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Total other operating expenses	$ 90,636	$ 4,491	$ 91,509	$ 4,491
Potential Litigation Settlement [Member]
Total other operating expenses	90,000		90,000
Program Closure Expense [Member]
Total other operating expenses	$ 636		$ 1,509
Retirement Expense [Member]
Total other operating expenses		$ 4,491		$ 4,491