Commitments And Contingencies (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Jun. 30, 2013	Sep. 30, 2013	Dec. 31, 2013 Scenario, Forecast [Member]	Sep. 30, 2013 Selling, General, And Administrative Expenses [Member]	Sep. 30, 2012 Selling, General, And Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Percentage of weighted average cost of capital				15.40%
Severance and acceleration of equity awards contract obligations	$ 0	$ 1,500,000	$ 1,800,000
Net impact of quarterly re-evaluation and accretion of liability expenses						1,200,000	1,300,000
Savings in general and administrative costs					$ 2,000,000