Equity Compensation And Employee Benefit Plans (Contributions And Administrative Expenses Under 401(k) Retirement Savings Plan) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
401(k) Plan contributions and administrative expenses	$ 1,812	$ 1,722	$ 1,612